Ahh, you are right, but eggs arent a better protein.and also, the protein contained in eggs is of the purest kind. protein powder companies test the purity of their protein against that of eggs.
Eggs are given a biological value (protein rating) of 100 (the whole egg, as there are some amino acids in the yolk), as they are the best natural source.
However, protein powders actually have BETTER biological value than egg protein. While eggs are given a value of 100, Whey protein isolate is given a value of 159.
Although they test against eggs, the protein powder is of much more value than egg protein.
Full article here-
Biological Value: Protein Ratings
Also, raw eggs may give you food poisoning