yeah that was a good read, I found a couple of things interesting:
this:
Most bodybuilders and strength athletes already consume more than enough protein (an understatement if there ever was one), so the importance of BV to these athletes who are already consuming copious amounts of protein has been overplayed. Even though whey has a higher BV than chicken breast, fish or milk protein, if the total quantity of protein you consume is sufficient, then it is not likely that substituting whey for food proteins will result in any additional muscle growth. Whether you choose a whole protein food or a protein supplement isn???t as important as some would like you to believe. For the purposes of developing muscle, the only guidelines for protein that you must follow are: (1) consume a source of complete protein with every meal, (2) eat at frequent intervals approximately three hours apart (about six times per day) and (3) consume a minimum of .8 grams to 1 gram per pound of body weight.
and this:
This recent fascination with various rates of protein absorption could be compared to the interest in the glycemic index. The glycemic index is a scale that measures the rate at which the body converts various carbohydrate foods into blood glucose. The higher the glycemic index, the faster the food is converted to glucose and the larger the insulin response. Therefore it is said that high glycemic foods should be avoided in favor of low glycemic index foods. The error in relying solely on the glycemic index as your only criteria for choosing carbohydrates is that the index is based on consuming a carbohydrate food by itself in a fasted state. When carbohydrates are consumed in mixed meals that contain protein and a little fat, the glycemic index loses its significance because the protein and fat slow the absorption of the carbohydrate. That???s why the glycemic index is really much ado about nothing and the same could probably be said for the casein and whey argument. It's just the latest in a long string of new angles that supplement companies use to promote their protein: free-form vs peptides, concentrate vs isolate, ion exchange vs microfiltration, soy vs whey, casein and whey mix vs pure whey and so on. Every year, you can count on some new twist on the protein story to appear. Certainly there are going to be advances in nutrition science, but all too often these "new discoveries" amount to nothing more than marketing hype.