I have 44 crit chance (i think i put in a mod in some gear after the fight, that gave me more) and 155 crit damage.I don't know, even with very low body skill (4), I enjoy it and beat all their faces quite easily without "cheating".
I simply use good cyberwares/mods and my "personal" technic
The most important is to buy the legendary gorilla arms at high level as possible. They are leveled and stay in state where you bough them (If you buy them at level 25/30, they are very weak in comparaison to level 50 ones). And also have high crit damage and crit chance, that's help a lot.
And little important detail, generally, I'm not especially good to those kind of fight (even pretty/very bad). My first playthrough, I thinking it was impossible, even in "very easy" and that I would never make it...
I have Legendary gorilla arms. I can't see the level of it, as the developers didn't put in a standard gaming feature. And legendary animals knuckles