Both Salem and Zack, Bayo's two best players, seem to be just as likely to go out in the 17th and below range than to make top 8. When they're playing at their best maybe Bayo seems broken but neither of them are very consistent, and I'm not sure if it's the character or just them.
That's the thing broken characters aren't inconsistent. They routinely take majors and locals across various scenes from various players. I've seen broken original injustice superman (blockstring infinite, safe zoning, way too much damage and a 2 frame super), mvc 3 Phoenix ( have to kill her twice she can kill anyone in the game in one combo and a free incoming mix up), sagat sf4, red venom (designed to be busted), storm Marvel 2, sentinel (marvel 2), magneto (marvel 2)ECT.
Broken characters also tend to elevate players to a level that they often cannot repeat. Such as evo champ viscant. He never had success on that level after Phoenix was changed. Sagat made players like Mike Ross into viable tourney threats.
Broken characters do several things to a game
They dominate so completely that a characters value can be determined based on how well they fight that character
They elevate players maybe beyond their threshold
Have a mechanic or exploit in the brand that cannot be countered (marvel 2 sentinel has permanent super armor and storm can fly away and build get meter
They Have no weakness in their kit (sagat and injustice 1 prepatch superman)
This is based off my experience with fighting games.
Don't think bayo has even one of those covered.