Perhaps it is me or perhaps many do not know about Ricard's Rapier's potential.
RR's strong attacks deal 6 hits, all which there own separate damage. Buffs add static damage to weapon allowing you to "multiply" your damage by 6 times. With poison resins, this can build 150 poison. With Darkmoon blade, this can deal around 2400 magic damage. With Charcoal or Gold resins you add 600 and 900 damage respectively.
Yet with such great killing potential, I have yet to see it used even by people who use Darkmoon blade. I mean, while 6 hits is kind of hard to pull off, the initial strong attack (2 hits) is fast and not very costy.
And yes, this is general discussion because RR is lethal in PvE as well.