"You certainly don't need the 150 grams body builders consume to create those freaky builds; but you'll probably need somewhere around 40 grams to avoid lassitude and zero drive. "
40 grams of protein.... I can't take a word of that article seriously after seeing him recommend someone working out to failure for 22-26 sets only needs 40 grams of protein. Even 150 is pretty low, unless you weight below 150lbs... real body builders strive for 1 gram of protein per pound of body weight off cycle, 1.5-2 grams on cycle.
The entire plans he outlines is more like cardio than weight lifting. Dont get me wrong, it will be effective in reducing body fat while maintaining mucle (if you consume more protein, can anyone say catabolism?), but it's not weight lifting. It reminds me of the sets they do in womens gyms, honestly.
If your goal is to really DEFINE your mucle then this is the wrong way in my opinion. You can focus on concentration and peak without subjecting your body to all of this forced muscle break down. Stop worrying about looking big for a little while and do slow, focused sets with absolute form and full extension. You dont need to do 30 reps of them, 10/8/8/6 or 12/10/8/8 is just about perfect for peaks.
Edit: Also, I forgot to mention, squats are the single most important exercise one can do for overall growth and develoment. Your body releases a lot of hormons (Like HGH) when you work quads. The meat and potatoes of weight lifting, really.