[Jonty30]

2D maps are drawn to show how the world looks from that vantage point. Depending on your vantage point, any continent on the map can increase or decrease in size. So a map that has North America as a central point will show North America being larger than it really is, when compared to other continents.

If they use a map that has Africa as a central point, North America shrinks considerably.

[KarlInOhio]

With an azimuthal equidistant projection like I posted, the central point is most accurate with increasing distortion towards the edge. The one single point opposite the center gets turned into a circle with a circumference of about 80,000 miles.

It accurately shows the distance and direction from the center to anywhere on Earth, but there is a price to pay for that.