After only 40 hands, there is almost no read that will get me to fold aces-up OTF. This is probably a 3-bet spot, to encourage Villain to bear in mind that BTN v Blind battles are not just easy steals for him.

Folding Aces up w/ NFD has got to be a bad play almost every time, too. IF Hero is behind OTT, there are 13 outs to complete to a better hand than Villain (well, probably 11 outs, as Villain seems to have a strong piece of this board, but it could be 66). I can easily jam OTT.