PvP and Crushing Blow

I just want to ask, for PvP, does it make sense to have crushing blow?
Or should i NOT have crushing blow at all?

Because if i want to ditch out highest damage i can to drop my opponent, it doesnt seem to make sense to have crushing blow in the event it only takes few HP off him if he already has low HP and i’d rather have deadly strike instead?

Without getting into a bunch of math, I’ll say that CB is not as effective as DS in pvp.

Cb is for pvm. You prefer any other stat over it in pvp.

Its not really that good to invest in unless ur opponent has 10k hp