and why we can't use mascot fighting style?
mascot fighting style has just bully clique punches and that bull or charge attack that us a animation.It takes much time in that attack.nothing special in mascot style
In my opinion the mascot fighting style is one of the most special ones.
The thing is that the running headbutt and dizzy headbutt attacks aren't part of the fighting style. The mission script just makes the mascot perform them when his lifebar gets yellow, red, or any other value. That's why he only uses the running headbutt after the dizzy headbutt and not randomly. He can also use the dizzy headbutt even if the player is hitting him.
His boss AI only makes him run and do the cow dance after he kicks someone in the balls (if the animations weren't loaded previously then he will stand will his arms opened instead of taunting).