In OW Full Loot PvP game's you farm to build gear bags depending on rank of the gear it can take up to 6 or so hours to build a few nice quality bags (which yes you run the risk of losing via pvp combat & also have the chance to gain gear also)
In a Game like WoW your gear heavily matters, You raid for it for weeks, months, years to gain the full set.
But you act as if that gear isnt lost. In a game like Darkfall me losing a gear bag or items relies on my ability to fight, my player skill determines my gear loss.
But in a theme park you have no choice nothing you can do, your gear is ganked from your character by the Development team lets call it Expansion Pack Gank your months and years dumped into that raid gear is now made irrelevant (And you paid for it to be made irrelevant)
and you start the rat race all over again for it to happen yet again just a few years later.
Now tell me whats the difference between Full loot Open World PvP, And Themepark DvP Expansion pack gank Full loss?