BCAA, as well as glutamine supplements are unnecessary if you are using whey powder.
Do you have a source/study on supplementation with whey versus whey/aminos combined? The fact that whey SUPPLIES amino acids is not necessarily the issue.
Consider this quote from Amino Acids & Bodybuilding By Barry Finnin, PhD, and Samuel Peters From Muscle & Fitness Magazine, April 1996
"Conceivably, two diets could contain exactly the same amount of particular amino acids (the same amino acid profile) but have significant differences in their absorption. A number of factors affect amino acid bioavailability (see Factors Affecting Amino Acid Bioavailability. The most reliable way to deliver specific amino acids is to administer the particular amino acids themselves . . ."