You have a point...
But remember, stat influence is weird(and some things are the same despite not being the same irl.) Like, how does the Slim have the same stats as a friggin wagon wheel?
F**k off. She is a Heavyweight. If you hover over Funky Kong and quickly go to Pauline, the kart doesn't change its size, signalling that FK and Pauline are the same weight.
I mean which characters are Heavyweight, but the game says they're Middleweight.
Basically, take Mario, Ludwig, or Mii(Medium), and try to identify which characters in this image have the same Kart size as Mario.