yes and he already said that on twitter
Bojack Full power > Gohan SSJ (M9)
Bojack Base > Vegeta SSJ and Trunks SSJ (Bojack is said stronger than Super Saiyan)
Nop and in DBS Movie is ~ in Movie 8
"Also of interest: the explanation that Broly’s “final form” resembles Grade III but has “beyond first-class” speed.
In Movie 10 is a mutation SSJ2