There is a huge difference in doing the world boss on Crom compared to Fury. On Crom it takes about 10 min (sometimes even quicker)for it to go down then you head off to the next instance and take down the next boss in another 10 mins and head off to the res pad and repeat for as long as you can be bothered. After a couple of hours you have 10 to 20 boxes to open. If your a low geared toon you should be well on your way to having an good purple outfit.
On Fury, well, you need 30 min plus just to get enough toons to start the fight and then you need to allow another 60 minutes to down the boss. Normally you would be doing this while a few toons are picking up some easy kills doing some pvp farming. So once the boss has been downed there is no other instance to head to and even if there was most people need a break from such an epic battle.
On crom you do not need to be in a raid to do the boss because none of you attacks hit other toons. On fury you need to be in a raid otherwise there is a good chance you will also be attacking other toons whilst you are attacking the boss.
Now I know it is never going to happen but I think that the rewards on Fury for downing a boss should be much greater than on Crom. you should get 3 or 4 boxes (maybe even more)to open to Croms 1 box.
At least on Fury you can have your particles on and see some pretty effects, on Crom you have to turn all the particles off and even then you still end up with a stuttering game play.