Ok, I had to drive to work to take a test (SUPER GAY, but wutever) and on the way back I started going over this hand in my head again asking myself WHY its good to shove turn, but not the river when our hand actually improves. Then I shit bricks and it hit me, so fucking obvious, yet for some reason I couldn't see it.

On the turn when we shove we get weaker J's to call, obviously A7/A9 will call, but there are also a lot of draws (as POKEMONS pointed out, but I was blinded to that information for some reason) that will call us. Backdoor flushes aren't going away, a bunch of his OESD's will also call.

On the river, he's obviously not calling with any of his draws except QT which hit, but al lot of the hands that we were beat by on the turn still beat us on the river minus a couple of weaker two pairs.

Don't ask me why it took me so long to realize this, but now I REALLY understand why it would be best to just shove the river. Thank you all for your help in this (even tough I wasn't the one who posted), I think this is going to really help me out in spots like this.