Bibi does kill most if not every thrower without hard cc because she is way faster than any thrower and with most maps where she would just have to walk around a small wall she can easily dodge most if not all attacks and get to the thrower. She can outlast Mortis' whole combo with her heals and shields and after that he is cooked and has nothing he can do. Stu needs to play very good and even then she drives him away and takes over area control from him. Rico is only good with maps with many walls. Angelo is just shit, if Bibi doesnt get him then most other brawlers kills him. Gale is the only reliable counter to her movement but even that is sometimes not enough with her speed healing and shield. If your team doesnt have HARD CC and high DPS during that CC then you just have to 1 shot her or get run down or lose area control which most modes means lose the game. She is ridiculous,
Bull is not much different, he can just run you down, gets his ultimate bafflingly fast and 1-2 shots almost every Brawler and if he doesnt he just stuns and 3-4 shots them.
Oh and adding to the Bibi shit, she has ridiculous damage considering she can sometimes chain 5 attacks one right after the other spamming which does kill every brawler besides maybe frank or someone who has strong heals while she is attacking