well i must admit compound exercises are key but why are you not big dj? you shout a lot about AJ and his machines but i do not think you have seen one. Plus sticking to AJ ideas in my opinion has not brought you far. you always talk about the overload principle and that builds muscle in your opinion..so if supersets and other methods are inferior to your AJ overload theory why is your back not thick?
allright dude, i'll try and address these points one by one to clarify some things if you will
1st point: you say "you shout a lot about AJ and his machines"
yep i praise AJ's training principles ideals, but i've NEVER praised his machines EVER
2nd point: you say "sticking to AJ ideas in my opinion has not brought you far"
well man, that's YOUR OPINION and if you look at my starting point 5'11" 128 til now 5'11" 175 then i'd say that's some kinda gain
3rd point: you say "you always talk about the overload principle and that builds muscle in your opinion"
yes, the overload does build muscle, but in my own particular case i wasn't able to increase my training loads, hence the reason why i didn't gain size
4th point: you say "why is your back not thick?"
it's not thick, because i DID NOT and WAS NOT ABLE TO INCREASE MY TRAINING LOADS, and yes, it's as simple as that, and in fact my training loads went down in the proceeding weeks before i had that photo taken
but on a side note, the past two months my training loads FINALLY, FUCKING FINALLY went up, and now i ma bigger and thicker

why did these training loads go up? 2 reasons
1. i got over my fear of a severe shoulder injury that i some years back, this fear of re-injuring it held me back from really going all-out on upper body compound moves, but now i'm over this fear and i go all-out on upper compound moves

2. i get much more sleep now (before i was only getting 4-5 hours of sleep a day, now i get 8-9 hours of sleep per day)