The red countries are those where the average is larger than D, orange the average is D, yellow is C and so forth.
You'll note the smallest countries are mostly third-world shitholes with malnutrition. You'll notice also all the larger beasts are in countries with large European populations. Israel, despite being fairly modern and wealthy is stuck at a piddly B cup.
To put it another way,
ANTI-TITS = ANTI-WHITE