Quoted from markmon:
The third flipper is a pro killer to me. The differences this round are huge. It's one thing to add toys to shoot at and cosmetic things. But a third flipper changes how the user interacts with the game. It really could be like a whole different play experience. I'm out on this one. But if I were in I wouldn't go pro.
Agreed, also the LE has the outer ramp orbit both ways, compared to just one way on the pro, giving you another another 1/2 of a shot.