The thing that I think *almost* keeps Batman Forever grounded is that it's based on an original Tim Burton concept, Tim Burton was still a producer on the movie (mostly hands-of in the end, it has to be said), and there are still *some* stylistic echoes between it and the previous two movies, especially with the second one.
Sure, it's wackier. But it's a kind of ''controlled'' wacky. It's got a lot more in common with Batman Returns than most people are probably willing to admit. Whenever I've rewatched it, I've often found myself being able to visualise how Tim Burton would've handled the exact same material.
Batman & Robin on the other hand was made entirely out of whole cloth by Schumacher and co, and is therefore in a completely different stratosphere even compared to Batman Forever.
I guess what I'm saying is that Batman Forver has still got some residual Tim Burton going on, whereas Batman & Robin has shed almost every vestige of the Burton movies completely, and cranked the wackiness up to eleven to compensate... it feels like it doesn't even belong in the same series as the three previous movies.
Yeah Forever is a lot less over the top than Batman and Robin, but it's also lacking any of the slightly twisted, off kilter weirdness that made the Burton movies so cool and memorable.
Instead everything suddenly feels really lightweight and superficial, with a couple of incredibly cheesy and ridiculous villains running around that you can't take remotely seriously.
A Burton directed Batman Forever would have been very cool to see, but I don't think Schumacher's version comes even close to being it.
I can imagine Burton having a field day with the ''big top'' sequences. And with making Two-Face be a true 'grotesque'.

On paper at least, it still feels like it carries those parts of the earlier, Tim Burton conceived version of the movie. It's really only in the way it was executed on screen which sees Schumacher make his mark. Some of the ideas in the story itself, at least to me, still feel like Tim Burton had some basis in them. We know for a fact that the scenes of Robin stealing the Batmobile was actually in the early drafts of one of the Burton movies, although I forget now if it was from the first or the second one. Lots of the other scenes do still feel like that too. So at least in conception it still carries over some remnants of Burton's movies.
Batman & Robin was Schumacher's work from the ground up. For better or worse.
