Steve I recently look up the amino acid values of whey concentrate, egg, brown rice, spirulina, hemp, and soy for a thread over on gymnasticbodies.
Whey has a far higher amount of amino acids per gram of protein than soy does. I found data for some form of sprouted brown rice and some other brown rice proteins.
Whey, egg were pretty close. Soy and hemp were pretty close though spirulina was superior to them. Whey and egg were quite a bit higher than soy. That sprouted brown rice was on par with whey and egg according to the data I found.