I just looked at the STO wiki, and could not find anything that distinguishes between PvE & PvP for the accolade benefits. Looking at the Kill Accolades that have bonuses, it seems to imply only PvE (bonuses against Cardassian ships, etc.), and that's why I've thought that they probably don't work for PvP. For what it's worth, here are the links to the lists of accolades that provide bonuses:
Also, here are the PvP accolades, which have NO bonuses at all, so I personally find no reason to grind them. Like all accolades, if I attain them through my regular gameplay, sure, whatever, but I would not go out of my may to "collect them all." Anyway, here they are:
Does anyone know if these work in PvP, if so the bonuses are well worth it. If you consider 2% stacking you could easily have a 10-15% damage buff and resistance buff if you do all the accolades.
Naw.. The damage type accolades do work, but only resisting against or damaging with the specific type.. Thus you can get the +2 Disruptor damage which is nullified when you target have the +2 disruptor resist.
Now I wonder if the faction specific bonuses work. IE NPC Fed accolade give a slight buff against player Feds in PvP.
In any case.. Youll get at best a 2% buff when both player have done the relevant accolades.