First your comparing two different types of graphic styles. WoW went the more cartoon look. ToR has the Bioware look that furnishes a lot of its games. I think WoW looks great on high end systems but for those that can not afford it the graphics become rather bland. I say this because I have a high end system and my roomate does not. I would not be able to stand playing WoW on his computer. It is ugly.
Now I am a huge Star Wars fan. I will defiantly be checking into ToR. However you are comparing a MMO Monster (WoW) to an infant into the community of MMO'S. Will Bioware get it right? I think so, they have not let me down with one of their games.