the reference used a dead 52 year old woman's bone, which took between 375 and 9920 joules to break. not exactly a peak human. walter's bones should be at least as strong, since he's around the same age and isn't dead (well, not at the time of the scene).
and not only did they not actually do it (simply imagined it might break his hand, which is a reasonable concern as a crew)
trivia video says that it was incredibly hard, and
would have broken his hand. they seemed pretty certain.
but a hand is far easier to injure than any other part of the body.
bone breaking calc doesn't specify what bone is being broken, so i'm not sure it matters.
First, very temporarily holding up another person is absolutely within the territory of average human strength. I could do that, and I am not athletic at all.
anecdotal evidence. walt can lift up 70 kg with each arm. so he can lift 140 kg in total. if you can do that despite being a vs battles wiki user, maybe we should revise our lifting strength ratings. but as it is, he has athletic human lifting strength.
Second, the towel dispenser easily could've just been, in-universe, one made out of a weaker material or rather old.
i think it's safe to assume that, in-universe, the towel dispenser is the same material as it is irl. there is nothing to prove otherwise.
We don't know, and even if we assume the high end, it would really only be 10-A at best
bone breaking is not 10-A
(and, if I recall correctly, his hands were a bit messed up afterwards anyways - I'd need to check).
his knuckes were red afterwards, that's about it
Third off, being tortured doesn't translate to combat stamina. I could be tortured for weeks, that doesn't mean my physical stamina is higher just because my captors don't kill me. That's not how humans work.
how about walt staying up for 24 hours chasing a fly around while sustaining various injuries until jesse drugs him? or him briefly surviving after getting shot by an m60 machine gun, which had instantly killed like 7 other people? or the various beatings jesse has taken, both in and out of captivity?
All of the "mastery" arguments are obviously wrong on virtue of not understanding what actually earns these abilities.
so you didn't actually respond. great!