How many Japans fit in Brazil?

21 Japans fit in Brazil.

Really
21
As Mercator draws it
14

Mercator makes it look like only 14, fewer than the 21 that really fit. This time the container is the one nearer the equator, and so the one inflated less.

Why the two differ

Mercator draws Japan 1.61 times its true area and Brazil 1.06 times. The count is the ratio of the two, so what moves it is not the inflation itself but the ratio between the two inflations. Whichever sits closer to a pole is blown up more.

Ruler
Japan 404,385 km²
Container
Brazil 8,540,708 km²

On an equal-area projection

Under Equal Earth or Gall-Peters the two figures are identical - for every pair on this site. An equal-area projection draws in proportion to true area, so the count you can see is the count there is. That is a definition, not a coincidence.

Open on Equal Earth