I think this is about what you’d expect though. They say 2 1/4 lb soy patties build as much muscle as 1 1/4 lb hamburger patty. The soy patty I looked up had

I think this is about what you’d expect though. They say 2 1/4 lb soy patties build as much muscle as 1 1/4 lb hamburger patty. The soy patty I looked up had 28g of protein, and the hamburger had 40g. If that’s correct, the study is saying that the soy protein is about 71% as effective as the meat protein, which is about what I’ve read based on the limiting amino acids in soybeans.