here Let me Help you out a little bit since you are too lazy to visit the links

here is your FE world, and FE map vs actual calculation of the flat disk you call FE.

A: No GPS coordinate would ever work on this map
B: Here we have severe warping of the continents
C: Distances between continents ridiculously increase as you get further out
D: No information or detail in terms of coordinates, or exact scale.
E: Boston is now facing completely away from Africa and Portugal. This is completely wrong according to GPS, or using the Sun to calculate my longitude and latitude.
So lets do some math based on the scale provided in this cartoon map being displayed here..Your Faq states the following information:
Circumference: 125,891 km (78,225 miles)
Diameter: 40,073 km (24,900 miles)
Firstly there is a small mathematical correction to make. A diameter of 40,073 Km is 24,900.2077 miles. When you take this and times it by 3.14(PI), you get the circumference of 78226.3095 miles. So let's move along here and get into more detail.
This map is 12x24 blocks, or 288 blocks all together.
Here we have a grid radius of 12 blocks starting at the north pole extending out to the edge of the Earth. These 12 blocks for sake of argument will all be equal in raidius (height). Here we take the diameter of 24,900.2077 and divide it by 24 blocks across the diameter to get 1,037.5086 miles in height for each block of the 24 blocks.
So each of the 24 blocks has a radius height of 1,037.5086 miles in height or length depending on how you look at it
The center Angle is 15 degrees with a radius of 12450.10385 going out to the circumference.
Segment Legend for FE map:
Number of Segments: 288 12x24
1) Segment 0 = What would be the North Pole
2)Segments 1-12 = 12 segment blocks extending out from Segment 0 to to the Edge Circumference and ending with Segment 12
3)All segments are equal in Radius Length.. (R/12) = 1,037.5086, Or (D/24) = 1,037.5086Diameter by segment:0: 0 miles
1: 2,075.0173 miles
2: 4,150.0346 miles
3: 6,225.0519 miles
4: 8,300.0692 miles
5: 10,375.0865 miles
6: 12,450.1038 miles
7: 14,525.1211 miles
8: 16,600.1384 miles
9: 18,675.1557 miles
10: 20,750.1730 miles
11: 22,825.1903 miles
12: 24,900.2077 miles
per Block: 1,037.5086
Circumferences by segment distance from center:0: 0.xxxx miles
1: 6,518.8591 miles
2: 13,037.7182 miles
3: 19,556.5773 miles
4: 26,075.4364 miles
5: 32,594.2955 miles
6: 39,113.1546 miles
7: 45,632.0137 miles
8: 52,150.8728 miles
9: 58,669.7319 miles
10: 65,188.5910 miles
11: 71,707.4501 miles
12: 78,226.3095 miles
The Area by segment distance from center: 0: 0 miles
1: 3,381,686.3551 sq miles
2: 13,526,745.4206 sq miles
3: 30,435,177.1965 sq miles
4: 54,106,981.6827 sq miles
5: 84,542,158.8793 sq miles
6: 121,740,708.7862 sq miles
7: 165,702,631.4035 sq miles
8: 216,427,926.7311 sq miles
9: 273,916,594.7691 sq miles
10: 338,168,635.5174 sq miles
11: 409,184,048.9760 sq miles
12: 486,962,839.0564 sq miles
Total Area Comparison:FE: 486,962,839.0564 sq miles
percent of Earth's ocean 70% - 340,873,987.33948 sq miles
percent of Earth's land: 30% - 146,088,851.71692 sq miles
RE:196,935,000 sq miles
percent of Earth's ocean 70% - 137,854,500 sq miles
percent of Earth's land: 30% - 59,080,500 sq miles
--------------
We can also see that there is 12 by 24 blocks. So let's outline the area in square miles per segment (Block) by finding the values below:
Legend:Diameter 24900.2077 miles
Radius 12450.10385 miles
Circumference: 78226.3095 miles
total area: 486962839.0564 sq miles
center angle: 15 degrees
Segments: 288, 12hx24w
Sector Area: 20290118.294016666666666666666667 sq miles
Sector Sector Arch Legnth: 3,259.4296 miles
Sector Chord Length 3,250.1293 miles
Segment Area: 230,984.1378 sq miles
Segment Radius:(miles)
1: 1037.508654
2: 2075.017308
3: 3112.525962
4: 4150.034616
5: 5187.543270
6: 6225.051925
7: 7262.560579
8: 8300.069233
9: 9337.577887
10: 10375.08654
11: 11412.59519
12: 12450.10385
Segment Area Arc Lengths:(Miles)
1: 271.6191
2: 543.2383
3: 814.8574
4: 1,086.4765
5: 1,358.0957
6: 1,629.7148
7: 1,901.3339
8: 2,172.953
9: 2,444.5722
10: 2,716.1913
11: 2,987.8104
12: 3,259.4296
Segment Area Chord lengths: (Miles)
1: 270.8441
2: 541.6882
3: 812.5323
4: 1,083.3764
5: 1,354.2205
6: 1,625.0646
7: 1,895.9088
8: 2,166.7529
9: 2,437.5970
10: 2,716.1913
11: 2,979.2852
12: 3,250.1293
Segment Areas:1: 1,604.0565
2: 6,416.226
3: 14,436.5086
4: 25,664.9042
5: 40,101.4128
6: 57,746.0345
7: 78,598.7691
8: 102,659.6168
9: 129,928.5775
10: 160,405.6512
11: 194,090.8378
12: 230,984.1378
Total Area Per Segment Block on the Map: (sq miles)1: 140,903.59812916666666666666666667
2: 422,710.79439583333333333333333333
3: 704,517.9906625
4: 986,325.186925
5: 1,268,132.3831916666666666666666667
6: 1,549,939.5794541666666666666666667
7: 1,831,746.7757208333333333333333333
8: 2,113,553.9719833333333333333333333
9: 2,395,361.16825
10: 2,677,168.3645125
11: 2,958,975.560775
12: 3,240,782.9200166666666666666666667
To get total Area of FE, add 1-12 and multiply by 24 to get: 486962839.0564 sq miles-------------
In a few months I am planning to travel from Melbourne to Perth (Australia). According to this map that would be about 10000 km, which would take at least 12 hours by airplane.
Lets see...
What Airport are you leaving from? And this greatly depends on flight path too. So time estimations of RE vs FE would depend on these factors

.. Hence the same path would be longer on FE than RE.. We can simply determine this by using a speed distance calculator.
10,000 KM's at 600mph would take 10 hours, 21 mins, and 22 seconds.. The average passenger plane does about 540-600mph. So at 580mph (likely avg) . 10 hours, 42 Mins, and 47 sec's .. And this is regardless of Re or FE
The Key thing to note here is that I made these calculations to show why GPS wouldn't work at all on the FE map, as well as why I could never use the Sun to plot my longitude and latitude according to spherical calculations if the Earth were flat. Hence, I would get lost at sea, or never reach my destination if FE was a fact.
The other key note is to understand that the most significant differences are notable as you expand out to the circumference.
Hence, America only gained 430k sq miles by visual reference to a cartoon map not in scale according to my calculations..(hence the FE provided map is under scale by a large margin) However, even when using this map as a visual reference, even Australia doubled it's sq miles entirely to over 5 million sq miles by visual reference to this FE cartoon map!.. And I'm sure New Zealand would know if their Country was twice it's size and distance from Australia

.. However, this shows it to be far less of a significant problem than it really is vs if we go according to scale percentages of land mass area in accordance to the RE scale.
But let's see where some of the largest changes occur in visual cartoon map reference not in scale vs land mass area calculations.. For this, lets go into South America:
RE:
South America has an area of 17840000 square kilometers (6890000 sq mi) This is roughly 3.5% of Earths 196,935,000 total sq miles.
FE:
According to this map provided and my rough visual calculation, I got 12,977,221.3879 sq miles.. Visualizing the FE map isn't very helpful considering it's not even close to scale.. But I still ended up way over 6.8 million sq miles to where South Africa would be twice it's current size..!
So let's do a more non visual calculation and go by total area percentage of 3.5%
I took the total FE area of 486,962,839.0564 and multiplied it by 3.5% to get : 17,043,699.365 million sq miles!
HOT DAM! That would make South America about as large as Asia within the RE model! 
So remember this when you go on your trip, if it's FE, it's likely to be a lot further than 10k kilometers

We really can't use that map as a scale because their Block size is larger than what my block sizes would be on the same map provided

.. And this is because if you look carefully, their blocks are not even, or accurately spaced.