This is what my reference was:
If you look under protein, it says (from Caseinate and Gelatin). Just realized they are the softgels and you got the tabs.
"Our Superior Amino 2222 Tabs provide a full spectrum 2,222 mg array of essential, conditionally essential, and non-essential amino acids derived from a blend of isolated, concentrated, and hydrolyzed protein sources"
Ingredients (among others): WHEY PROTEIN CONCENTRATE (by volume, the #1 ingredient), SOY PROTEIN ISOLATE (by volume, the #2 ingredient), etc... I'm sure you get the idea.
And your understanding of whey is wrong. Whey is a complete protein. It contains more than three amino acids. I'm sure you get more amino acids in a half scoop of whey than you get with the Amino 2222.........................