Equities wise you got the worst result as your 4 bet got you heads up vs AAxx with approx 28% equity. Since you had a late position caller your choices were to fold or just call the 3 bet.
I agree that you are against AAxx likely 95% of the time without any reads to the contrary. I would prefer a fold as my first choice unless your hand was stonger say KKQT with suits.
If you do decide to play then just calling the 3 bet may get you into a 3 way pot against say 68910 and AAxx with approx 25% equity. Or if you do lose the initial caller then you haven't lost your whole stack when you wiff.
FYI I really like the simulator here
ProPokerTools.com - Serious tools for serious players for calculating equity in many of the PLO games.