WotLK beats TBC three to nothing
Another post about WotLK, yes. And yes, I’m a wow fan. And no, I’m not 80 yet (atm) and not because I’m a nub. Just because I don’t want to rush in the new content.
Why? because the following three reason.
First score: questing. 
Questing and exploring in WotLK is much better than TBC, for many reason… the quests are more fun, have a “overall” sense in terms of lore and story and progression, are a bit different (the idea of “vehicles” is good). And questing IS the way to level, since pure grinding pay not so much.
Second score: graphics and sound.
It is impressive how blizz guys have achieved with the same old engine. Fire effects and “portal” effects are impressive. The whole environment is more suggestive than TBC. (If you want to see a nice tour, check this article out.) In particular Grizzly Hills is really close to the Giant Sequoia Forest (which I strongly suggest you to visit). I really like the “nordic” music they created for Northrend and it is much better than TBC soundtrack
Third goal: lore.
I really feel involved in this siege against the Lich King: the Wrath Gate event is something to remember and the “traitor” cutscene in TDK is really fun/frustrating and it increased my will to face and beat the traitor Arthas. While levelling and gearing up to attempt (and finally win) Black Temple, I’ve never felt such involvement. Akama quest line, in the end, doesn’t hit me too much.
What I liked more, in tbc, was the Caverns of Time quest and instances. Fortunately they added Culling of Stratholme in this expansion, so I can enjoy the WCIII exciment once again 
A series of final considerations (could sound like the fourth score)
Having two starting point, the zones were less crowded and it reduced the lag, the bug and the queue to kill that specific mobs.
Yes: we had a queue to access the server, but it was done, IMO, to reduce the lag. After the first week I’ve never been queued again. This make me think they reduced intentionally the queue allowing more people to log at the same time, just because now the players are well distributed across the continent.
What do you think about it? What was your experience?
ps
images can be fount here and here
