>Animal protein is superior to plant-based protein if you consider the natural amino acid profile. Plant-based protein simply lacks several amino acids and many sources aren't "complete" proteins. - Vitamin B12 is essential for the body and found almost exclusively animal proteins.

This really is the wrong way to argue.

So what was the situation before we developed tests to detect amino acids and Vitamin B12? Did vegans get to correctly argue that nutritionally plants were equivalent to animal foods? No.

Well they still incorrectly argue based on what you said that all that one needs to do be successful vegan is to eat a variety, take some b12 and some protein power and the nutritional aspect is taken care off, They can also they can argue that plants contain useful compounds not found in animal foods, how do you you argue?

My point being that must ultimately look at the health outcome of each food group experimentally.