As a PVE Mage, I can tell you that I pwn in pvp with 0 resilience.
I did a few arena, a few bg's and a few duels and I died very few times.
I'm only 366 ilvl and yet the only class that provide a real challenge are rogues.
Yes I occur, I may not have fought the best pvp'ers but for a stressed guy like me who dislike pvp because of the additonal stress of being an idiot for pressing the wrong key and your dead, that was enough for me to go back to pve.
Even thought I'm not raiding with the best players, we have fun to try normal fireland, we have yet to down Shannox (1.7% furtest we got him ).
I bet those doing Heroic mode are not raiding 5 hours a week.
Must take 5 hours a week just to plan the best way to attack the boss.
5 hours a week? No, as you suggested we probably spent over 5 hours a week on tactics, with about 12-16 hours on actual raiding.
If you're having fun, you've won the game. I knew plenty guys with server firsts that were always miserable. When the fun dried up, I quit, I think a lot of players loose sight of that, and unfortunately being a progressive or "heroic" raider can make having fun trying sometimes.