You cant beat the math. You raise to 9, so the pot would be 18 and you would have 21 behind. Potting any flop is guaranteed +EV in the long run. Even if he had the perfect cracking hand like T987ds, he can't get enough implied odds to prevent you from making money until the SPR gets to 1,5. And as no one has only the perfect range, you can pretty much shove any flop up to SPR 2 with Aces versus one player and it will be +EV in the long run.