I've only been to TL pre-kids, so I can't really compare.
But, I have taken them to BB and they really enjoyed it. When my 2 youngest were 5 and 9, their favorite area was the Ski Patrol Training area which is designed for that age. It's a nice area for those too big for the kiddie area, but still kids.
They also loved the family raft ride, those side by side slides (?) and the lazy river. There are also tube slides that are a lot of fun. There is definitely a ton to do at BB even if she doesn't like the really big slides.