Hero has two very tainted overcards, with likely another AK accounted for in UTG's hand, and a gutshot draw. If behind, hero has at best 6-7 outs, nowhere near enough to raise for value in a 3way pot. His equity is likely in the 20% range.

Also, getting 3bet is a catastrophe, especially when we had an opportunity to see the turn with our weak hand for just a single SB.

Also, players generally don't bet into a PF capper and 3bettor with weak holdings. The PF action should tell him exactly where he is at, increasing the chance that he has a monster made hand like JTs or JJ/TT.