"complete protein" 不等于 "the most complete protein"

Wikipedia (http://en.wikipedia.org/wiki/Complete_protein):

"Soybeans are a source of complete protein.(ref10)"

ref10 (http://www.truestarhealth.com/members/cm_archives12ML3P1A8.html):

"Soy protein is derived from soy flour. Of all the various vegetable proteins, soy is the most complete protein. "