Advanced Busoshoku is more rare than Advanced Haoshoku

[SSJ2]

Does anyone else find this strange? We've only seen two people using level 3 Busoshoku, but many more are seen or implied to have Advanced Haoshoku.

 

[Future Warrior]

 

[SSJ2]

2 confirmed, 1 possible.

 

[Future Warrior]

We haven't seen enough top tiers fight seriously yet. Maybe more will get revealed.