NO comparision BB all the way.
The only thing I liked about TL is the crush n Gusher--- and that would be the only reason to return. That slide is the best slide ever. However, TL is just poorly designed. TL does have some cool things like the wave pool & shark reef, but the slides stink. They are too short and boring--- ALL OF THEM!!! EXCEPT Crush n Gusher.
NOW BB is awesome. They bring you up on a chair lift. The red slides in the back of the park are fast and thrilling. The enclosed one is just like space mountain. Its totally dark inside, except for the fact that they drilled tiny holes to let the light in and when you are moving really fast they look like stars and you feel like you are on space mountain. The family raft ride is GREAT. and no stairs to climb. The racer slides are also thrilling.
I have been to TL 3 times and BB once and so prefer BB-- if they ever put in the water coaster (like crush n gusher at BB I would have NO reason ever to go to TL. In fact Water Country in NH beat TL too.