They're both worth doing,if your goal is doing the most thrilling slides then I would do BB,otherwise I would do TL first and leave BB for another day.
BB:bigger more thrilling slides,very good family raft ride,good lazy river but freezing water falls on you in the caves,average wave pool,unique theming but all that fake snow causes glare from the sun,I dislike how all the slides are up the mountain and you get tired of going up the same couple of staircases.They do have the chairlift but it may have a wait and only gives you access to a couple of slides.
TL:more relaing tropical theme,huge wave pool with bobbing wave mode as well as the big surf mode with the huge waves.Slides are good but not amazing,the family raft ride is the worst one,a couple of good tube slides as well as some good somewhat thrilling body slides.They have the Crush n Gusher water coaster which is very good and unique to Fl waterparks.Another unique attraction is the shark reef where you snorkle with small sharks.Good lazy river and a better park layout,in my opinion.