Sadly, I have a hunch that it will lose to Lights as Lights is action-packed, has explosions, cars, and stunts. All that seems more popular than musicals.
No offense to Lights though... I think it looks awesome in all of the videos I've seen. I just can't vote for it as I've never been to it or any carbon copy (as they don't exist... but I would hope for one in California!)
Plus I think that more people have been to Florida's parks on here than California's. Maybe I'm wrong?
Unfortunately, as Brandon pointed out, big explosions will earn more fans than musicals. Oddly enough, though, LMA has so much downtime between scenes that the action loses momentum very quickly.
Disney's musicals are better than their stunt shows. Leave the stunt shows to Universal. They know how to work 'em.
From the sounds of it LMA sounds like an average Jackie Chan movie. (Don't get me wrong, I'm a HUGE JC fan, but his run of the mill movies are just action action action with some story built around it) Phenomenal stunts and action, but the filler in between can be fast forwarded. But of course, I should just see it for myself!
I've also seen the original show in France, and I like that version better than DHS's since they use audience volunteers as extras during the show.
LMA just seems to eat the day. It's hot, slow, long, and only plays a couple of times daily. Since you have to queue about 45 minutes before the show to get a decent seat, I find that the whole day must be planned around it, and it ain't worth planning around.