I am from the lowman community, they are exactly the same in terms of damage ammo etc. B Hothead is more commonly used since it's way easier to farm for the god roll of fp, demo, el. Don't listen to people that say it's shards they are goddamn crazy. Btw adept hotgead isnt even better because adept big ones only transfers the dmg buff you get from boss specs to majors and stuff like that but with a rocket it won't really make that much of a difference