Yeah but that doesnt mean they'd have a completely different body type/shape, with most genderbent fanart (most canon genderbends too!) that ive seen, the character(s), if they're being genderbent to female, is much shorter, has slimmer shoulders and wider hips, and it's like?? No?? Just bc they have a different gender doesnt mean they're a different person??
and just bc they're genderbent doesnt mean their chromosomes have changed ¯\_(ツ)_/¯