I took the whey suggestion from leangains FAQ section but it may have been only pre-workout though this still acknowledges a need for nutrient timing and frequent ingestion of aminos, still contradictory to the argument that a frequent ingestion of aminos isn't effective due to a lack of research. I realize these are general argument points and come from a smattering of people across a few topic threads but it's a ridiculous box to be on as they down protein around the clock or at least as frequently as 5 or 6 times per day between meals and supplementation, especially when that camp seems to believe it doesn't matter when macros are ingested as long as they are. It's a lot of dancing around to eat within a window and then outside of it with supps when you could just break it all down to 5 or 6 meals, have the same macros ingested in the same time frame along with frequent protein intake.
Yes, copious doses of AAS do change the protein synthesis ballgame. That said, if LG and the Warrior Diet were the optimum bulk dieting methodologies, AAS coupled with LG or Warrior would be the "weapon of choice", but it isn't. And yeah, genetics do play a huge role in aesthetics. Muscle belly insertions, fiber types, shape et cetera. Even ugly people grow though and everyone in between. One person on diet X may have a bicep that inserts an inch or two higher than another on the same diet. The fact the longer bicep will look better has no bearing on the diet's efficacy. Furthermore, many people on this board use AAS. There is even a forum for it. If not AAS, pro-hormones. I believe your company sells supplements to ellicit hormonal changes? The general readership is a mixture of naturals, users, beginners, intermediates and a handful of seemingly experts, or at least well versed lifters so sampling for a specific population or excluding one isn't very accurate, except for maybe elite level bodybuilders or powerlifters but you never know. Either way, a diet is a diet for a pro or joe alike.
Congratulations on adding 200lbs to your total. That is significant and a source of accomplishment I'm sure. As an aside, and only for my curiosity, are you natural? Do you use PES products? And, unfortunately without a time machine, nobody will ever know if that time period could've produced a 250 lb gain. Also, while powerlifting and bodybuilding are similar in that we both lift weights, different physiological reactions are the goal for each sport.
Bodybuilding, where bulking traditionally finds it's home, is designed to induce as much muscle damage as possible, where powerlifting largely takes advantage of neural adaptations. There is of course cross over but it's plainly obvious an hour or two of bodybuilding training vs. powerlifting ellicits much different results which can change the ballgame of protein synthesis significantly as well.
We don't have many studies to refer to on this point. The closest measures something like .8 grams of protein per pound of lean mass on a sample tested for powerlifting. Powerlifting /=/ Bodybuilding.