I don't mind the 3bet for ISO ip, but you gotta remember that AKo is just like ANY other drawing hand. Just 'cause it's got an A don't mean you got a hand that'll go to the river. For crissakes he's 11/10 and opened UTG. He's prolly doing that w/ like top 6% of hands.
The flop is DEF a fold. The only thing you're beating is air.