I get what you're saying, they still just come down to equity and ranges though. Commitment threshold (which is their main drive behind SPR) basically means dont get into a position where your equity is such that you'd consider folding with 3:1 odds. So I dont see folding AJ in that hand as being bad because of SPR, I see it as bad because if you think you're so far behind is 3-bet range that you need to fold with good odds, then raising in the first place was bad.

Same thing, just a different way of looking at it I guess.