At first i have to say i dont fight as Berserker, so i have only "fight against him" infos... but if im correct, zerk can start spin at start of dodge and late dodge right? Lot of times happend to me I fights against zerks, a lot of theirs spins hit me (maybe "fastspin"). If u want, we can try sometimes ingame

But nowdays we w8 for reworks so...
The same I can with HL feint my dashworward heavy to spin at start (it have benefit earlier superarmour) or can start spin lately (benefit is more mindgame).