For 1v1 equalized pvp, the only things that effect pvp are skill accessories, and skill plates.
For Group equalized pvp, its the same, only skill plates and skill accessories.
For 1v1 ladder, gear is taken into account, as are stat plates.
Just a heads up, the pvp scene in the game is dying kinda badly because of the terrible way nexon runs their servers. If they fix the lag, the game is really fun in pvp.