You can twink your characters to disgusting degrees in EQ2, for its claim to be "restrictive" of the types of gear you can acquire.

You can twink everything from Gear, enchants on Gear, "trinkets" that other noob chars would have.
The skills have different levels, making the same skill you get at, say level 10 have around 7 different upgradable strengths to it, the top couple being quite expensive. Having a single max-upgraded skill would make the difference to someone who only has Rank 1 skills.

The rules of the game make it so that in order to PvP in an area, you have to fall under the specified level ranges for that zone. If there are 2 ultra-twinks running around, they are pretty much unstoppable. Higher levels can't engage them, and lower levels that are not twinked stand no chance.

All in all, PvP in EQ2 is total crap.
But if you want to play it anyway, play a Warden for PvP. They are OP and haven't been nerfed since launch.