Sins of an Angel
I know, they do sound and seem very similar but I just prefer the theme of WAR better. I'm not too partial to WoW's models and environments and just the general look of it.
Bren covered most of it, but... I haven't played WAR since the first release so they've probably updated it a lot. However, it's more or less just WoW reskinned. The differences are:
1. Your race is your class (more or less). Each race has about 3-4 class options open to it, and each class is unique to that race. Orc tanks are the Black Orc class, which are similar to but not the same as any other class... whether on that faction or the other. Most have an equivalent on the opposite end, but not all.
2. Heavy PvP focus. You get exp for PvPing, and you can buy gear for your level pretty cheaply from the PvP point store. So basically, after getting out of the starting area if you felt like it you could PvP to level cap and never have to hunt for equipment or worry about getting money.
3. The theme is SO MUCH BETTER. No cartoonish whatzits giving you pointless quests. Now you have properly themed whatzits giving you pointless quests that fit into the larger theme of the zone. Such as burning down a village.
4. Less content. More or less. There just doesn't seem to be as much to do, but what's there is more than enough to get you outleveled for the zone and moved on to the next one.