Not really

at 75

Guillotine vs Spinning Slash had an awesome balance.

Guillotine had a higher DMG potential but Spinning slash was consistent

meaning when you couldn't cap out attack and acc
spinning slash >>>> guillotine.
but when you could capp atk/acc
guillotine >>>> spinning slash.

Honestly Entropy should have a atk/acc bonus so that when DRK can't cap out attack it wrecks mobs.

and imo Quietus should be a little weaker than entropy(after they are both buffed) but the aftermath and skillchain properties should be the reason you use it. (imo it does need a boost to be at least at the same lvl as torcleaver.