Since I have seen people questioning the fact that PVE stats apply to pvp quite a few times I have decided to post it and create new TAG - PEEVEEPEE aka PVP:
"The PvP stats are PvP-only stats, general stats will work in both PvE and PvP" - Jayde, Funcom system designer
People don't see stats "stacking" with their PVE ones in PVP tab and assume that assassin's unholy armor ressistance doesn't protect us in PVP - it does.
What you won't get is PVP gear helping you in PVE scenario vs mobs.
to sum it up: PVE and PVP stats stack in Player vs Player scenarios.