The pool in BB has a very rough bottom and the kids feet were a mess. If you go there, plan on wearing water shoes or sandals. The kids like both parks (ours are 8, 10, & 12), but I just asked them and they voted for TL as overall best.
I like them both, but I LOVE TL. The Crush n' Gusher is great, they have the shark reef which is really cool and my personal favorite, the wave pool! It's awesome! A perfect people watching encounter, let me tell you that
I barely saved my dd from drowning in the wave pool at TL - I think it's too intense for little kids. We prefer BB. And they have a great kids area with ice floes and a zip line that my dd loves. The one draw for ms at TL was the shark reef - but I think it's gone now.