I think it just depends on how each fighter uses their own tools to win. I train everything, but just so I can defend against takedowns and BJJ. (Itrain them most) All I want to do is stay safe on the ground, and work to get up. I want to spend as little energy as I can to knock someone out standing. Every fighter has a "go to" strength, but if you don't train your weak spots, you may as well quit before the show!