In the whole Pro/LE thing, both have pluses and minuses. These are my opinions and not facts, and should be treated as such.
Pro (Pluses)
Wolverine placement is better because the playfield is slotted for it. You don't have to remount the Wolverine, and even a remounted LE Wolverine is not as good as the Pro version. The remount makes the Wolverine toy wear out in the back. Ask Zdoor how many he has seen like this as he has probably seen more than most. (This is a huge plus for the Pro models)
Cabinet artwork I think is better, but that is very subjective.
LE (Pluses)
LED show is biggest improvement the LE has over the Pro.
Spinning disk makes a great MB intro ala Lost In Space.
Nightcrawler toy is nice, but for some reason seems it could have been used better. Still a plus as it is better than not having it.
Lockdown bar, side rails, and playfield support- (I don't know what the pro uses but I rather have the support brackets and older lock down mech and I know the LE's have them)
I would not consider the Ice Ramp a plus as it really hasn't done anything for me, and has been a negative in earlier code.