I thought he meant flat a 2bet with QQ/AK...
So if he's flatting the 2bet with those then only getting it in with AA/KK the rest of his 3b range must be bluffs... But I'm only taking my first shots at nl50 so don't pay much attention to me lol. But if he was 3betting 2% and never bluffing then I agree with you and I'd just fold AK.