True Left

"those who consume animal products clearly have an advantage due to their higher aggression."

Are you saying the animal products chemically causes aggression in anyone who consumes them, or are you saying that those who are inclined to consume animal products are more aggressive anyway?

In any case, aggressiveness can be advantageous or disadvantageous depending on circumstances.

"And history reflects this, as non-Aryans almost always end up defeating Aryans."

I am not sure which examples you are thinking of. Aryan diffusion involved us defeating Gentiles many times. The main historical Turanian advantage over us is ergonomic: their food being able to walk with them while we had to carry our food! This allowed them to retreat back to the steppe whenever they needed to, and if we tried to pursue them, we would always run out of food first.