If a level 50 enters a lvl 30/40 pvp, they will be synced to it, the only thing that lvl 50s benefit from being a fully decked PVE gear is that they've reached the stat cap, and like what Taneshima Popursa said, Morale and the resistances in the resistance tab in the character sheet will be 0, Morale and resistances only works in LvL 50 PvP, so if you want a semi balanced game, if you are concerned with fully PVP geared players, play lvl 30s or 40s PVP, and face roll them there, itll be skill vs skill then (well of course you'll also have the chance to face the dreaded party composing of you know what). So if you want to PVP in lvl 30s/40s be sure to at least be geared in your level bracket. And you'll be able to crate a meme about you killing fully decked pvp players stating "your morale not save you here mortal!" or something like that.