I loved the story to Warcraft 1 through 3. I loved WoW's Story to Burning Crusade and A little into WOTLK. I am no guy who loved Star Wars. I thought it was pretty cool but wasn't fully interested in it. Going based off of the story bits that I do know the story in TOR was good. The thing is... TOR is literally WoW with Star Wars Models and Mapping.
I'm assuming you haven't played it all the way through. I'm not gonna pretend that there aren't a lot of similarities, but it's in no way a WoW clone. For one, SW does alot of things right that Blizzard didn't seem to realize until The Old Republic debuted. Even checking out the beta, they are adding in a bunch of small details into mists of pandaria that came directly from TOR.
second, and the reason I like Star Wars above WoW atm, is the boss battles and physics. The majority of the end game bosses have really fun and fascinating mechanics to beating them, something world of warcraft seems to not bother to do anymore. With the exception of a couple unique bosses, mostly the deathwings and that worm thing in blackwing. And that being said, in SW, the physics engine is a valid way to deal with most enemies. Particularly hard mob that's prone to knock back? Throw him off a damn cliff.
The other reason I like star wars is the general uniqueness of some of the classes. True, the knight is a warrior/paladin/dk clone, and the consular is a priest, but show me what class a trooper or imperial agent corresponds to in WoW.
Yet another reason I like Star wars is the ongoing story. Something World of Warcraft doesn't bother with past level 10. You actually feel like your character, and you actually develop preferences for which companion you use.
All I'm trying to say, granted this is a game I'll probably defend to the death solely because it's KoTor, is that you can't base your judgement off of what is similar to World of Warcraft. They did a lot different and a lot of what they did similarly is done even better. If you don't like star wars, that's cool, but saying it's a WoW clone is pretty baseless. Especially if you haven't gotten any higher than level 20, which is where the classes start to build some unique properties.
/endrant
P.s. Sorry, forgot to add this. Yet another major different in SW that i find preferable is the lack of auto-attacking. If your not hitting your slash button, or shoot, or something along those lines your not dealing damage. And while this is minor, it also means that you don't get any free procs. Also, force choke.
/realendrant