To me, the problem is that the 3bet was called. So unless MP2 is a really big fish (the stack size isn't enough to say that, you need some stats on him for that), he is representing a premium hand as well, having called a tight 3-bettor.
Out of position this would have been an easy fold, but here it's indeed more interesting. The problem is that with 2 players like that the chance of 1 of them dominating you is very high, so what would be the plan for this hand?
Normally big ace hands dream of hitting the ace, or to use it as an out while bluffing (making for a weak semi-bluff, or a strong one, depending on your position and the board texture). Here plan 1 is not really possible, because it's a 3-way 3-bet pot. A totally different animal than a heads up 3-bet pot (in which case it would still not be a very reliable plan often).
And what about plan 2? bluffing a 3-way pot is a lot more dangerous than bluffing a heads up pot.
Of course in position you can try to make sure you don't lose too much, but what are the odds of winning a lot from this spot? I don't see any of them showing up with a dominated hand in this case. you're crushed by the top end of their range, and you're only doing ok against half the bottom end of it, considering MP2 just called, and therefore wasn't even trying to bluff.
I would have to say - it would be an easy call against a 3 bet, and a possible call even against a super-tight 3-bettor in position, but I think against a tight 3-bettor AND a caller, it's starting to look like a fold to me.