Why do you fold ~50% against 3x openraise and defend 100% against 2x openraise?
Against 2x openraise you can fold some hands, garbage like 82o 72o stuff ~5-10%, the advantage ---> villain will see you fold sometimes and may think he do something right with his sizing. Furthermore you need 25% Equity to call +EV, you have around 30% raw equity with 72o but I think it is not enough because you never realize 100% of equity, even in position, with a hand like that.
From math view: Villain need 50% FE for autoprofit with minraise, right? I hope so^^ If you tend to call very often, I think he'll need around 35%-40% foldequity but for that potodds you maybe can and should defend around 90% of your hands.
Constructing good 3bet ranges isn't easy against 2bb imo, because if you make it 6bb against 2bb, your stack to pot ratio is ~8 (100bb stacks preflop), thats a good SPR for low suited hands, suited aces and mabye mid and low pockets but not very good for TPTK-types but mabye it is compensated by your positional advantage. The stack to pot ratio and the ability to call a lot against 4bets (because enough stack left and position) leads into the thesis that all playabable hands are +EV 3bet regardless of villains behavior against 3bets because you'll make the pot bigger in case you win and deny equity (lol 1-1 words of Mathew Janda, sorry for that).
But if you start 3betting 30% or more now, it is easy to exploit and lol mabye you become the tilter if villain starts to adjust by 4betting recklessly.
If constructing 3betting ranges become tricky you should mix it up with a lot of hands but thats hard to implement. Mabye you start 3betting more for value, like 88+ KQo and KQs + some suited connector, boardway, onegapper stuff and hands that works well with SPR 8. I am honest, I have no straightforeward plan with pure strategy in that situation. Calling very wide and 3bet more suited connectors and the same bluffs like against 3bb seems okaish.
Your range against 3bb:
First, we have to calculate the anytwo-EV for the SB against your approach to find out whether we can openraise any two or not against you:
EV(OR 32o) = %(fold)*(1,5bb) + %(call)(6*adjusted Equity - 2,5bb) + %(3bet)(-2,5bb).
Realization with 32o: Tough to say, we often want to check/fold when preflop steal in vacuum is +EV, mabye 70% realization? Against your callrange 32o has 31,24% raw equity and
21,9% adjusted equity if 32o realize 70%.
EV(32o) = 0,507*1,5bb + 0,341*(6*0,219 - 2,5bb) * 0,152*(-2,5bb)
= 0,7605 - 0,4044 - 0,38
= -0,0239bb
Alright, any two is not possible, but Villain can openraise a hand like Q6o against your range and you dont want that someone can profitably openraise Q6o in the SB against you in BB
But with your range you have another problem. Imagine:
I sit in the SB and openraise my 70% range (because I can profitably openraise Q6o against you), you 3bet 9bb and I have a random hand, knowing that you are super polarized and 4bet 22bb (19bb additional investment) to win 12bb in the pot. Means, that you have to fold ~61% of the time for a +EV any2 4bet.
And well, if you fold all your bluffs (67% of your hands), I can do it...
It is okay to have junkhands in your range for 3bets, but I think you should add some combos which are good 3bet/calls like KQs, JTs, 67s or something like that and call low suited hands instead of 3bet or just adjust your 3bet range in a way that you dont have to fold against 4bets that much.