The WoW event is pretty bad, it's just a token/daily quest grind for rewards. I was actually just doing them and came to the realization that it's not worth doing anymore because a year from now it won't mean anything because most of the community is going to leave it in mass for TOR, GW2 and possibly FFXIV according on if the 2.0 changes stay on schedule.
Anyways it's better to compare the FFXIV and FFXI (FFXI has the best events out of any MMO) events. I expect they will eventually redo the events, and I seriously doubt something like the current events would be permanent.