Well yeah, it could be that I suck in the posterior chain and therefore the quads get overloaded and I think I have weak quads.
It's just that the high bar squat is SO much harder than the low bar squat that ... it's gotta be the quads, right? Yes different levers etc, but...
I can hip thrust 110 kg x 8 reps pretty well (I probably can do 120x8) so it can't be the glutes, right? I can leg curl the whole machine weight, so it can't be the hamstrings right? I can deadlift 400 lbs with bad form (still a pretty strong back, right?) and I can deadlift 330-352 lbs with good form.
But when it comes to squatting, the more the quads play a role, the less weight I can use. I'm not sure if I can high bar squat 140 kg. I assume I can but I never tried. So considering all these things... it's gotta be the quads.
When I do low bar squats I feel like my quads are pretty much isometrically keeping me from collapsing forward, but not doing actual concentric work in the squat itself. That's the feeling I have. In the high bar squat I feel them actually working concentrically.
I don't know, this his how I feel.
PS. I can only do really good pistol squats on my left leg. The right leg has NO chance of getting beyond parallel, I'd fall backward or my knee would pop-out or something.