Airballs are bound to happen once in a while (particularly with the Mick on a stick or the Rockstar standup on the left ramp), but it generally shouldn't be happening on normal ramp shots. Things like the ramps, orbits, records shot and side targets should be pretty smooth on this game.
Interestingly though on my LE, I did notice more airballs than on the Pro I owned previously. I just dealt with it (it wasn't as consistent as it sounds like it is for you), but I did notice the game flipped and felt totally different from the Pro. I'm not sure what it is, but that could be part of it.