Carnivore? Who just eats meat?
My body has issues digesting meat. Thus. I am a vegetarian and it has not effected my performance one bit. Well... since I am not in constant pain it has helped improve it.
Vegan, vegetarian, omnivore, whatever else are not necessarily the healthiest or least healthiest diet. It is what you eat plain and simple.
Personally, I can't stand many of the preachier holier than thou vegans.