Felting TPTK against shorties

Let's say I raised 4x with AK in EP and got a caller in LP.

The flop comes A72 rainbow. You c-bet 6x and LP, who is short, overbet pushed.

Assuming no reads. We all know playing TPTK for full stacks isn't a winning play in the long run. So the question is, how short must villain be in order for you to call the push? 2/3 of a buy-in? half? 1/4?

What if villain min-raises you instead of pushes on the flop? What is the size of your 3-bet (I hope no one considers folding here)?

What if the flop is more drawy, like KT8 2-suited?

I gambool every time here.
20 BB(big bets) or less. Sometimes more.
I push over a min-raise and watch every PP KK-88 + <AQ call me.

I usually felt TPWK against a 20BB stack. Against 3/4 stack it would depend some on board, reads, etc. Sometimes it's terrible, sometimes it's best.

Up to 40BBs or so. I won't felt TPWK because that's usually exactly what they have, but TPTK, definitely.

Once they get close to half a stack then the stakes are too high - with reads, sure, but with an unknown I'll bank my Sklansky dollars and find a better spot.

No-brainer "go for it" up to 50BB, 50-70BB I try to use some reads but in most cases I grit my teeth and play it anyway. Too many people overplay weak aces, I see too many absurd check/raises with inferior hands and atrocious calls. 70BB or more it's definitely read dependent and more other factors apply.