If it was made by any other game developer by any other name, it would be considered a decent to good RPG that tried a little too hard to be Dragon Age on Red Bull.
Whether it's fair to judge it as how it differed from the first game and because it was Bioware who made it, I suppose that is up to the individual. I can see why a lot about the game people would dislike, but I thought despite many niggling flaws it was still quite good and more importantly an important stepping stone for Bioware. They've been sitting pretty in their safe-zone for a long time, its time to branch out, even if it's scary and doesn't work out perfectly every time. In an industry such as ours that is plagued with a follow-the-leader mentality and only the tiniest steps forward in sequels, we sorely need that bold action. Even if it means we occasionally fall flat on our faces
edit: It should be noted for the record that I am also a big fan of Obsidian entertainment, a studio (in)famous for its buggy releases and often wonky gameplay. I have a lot of experience putting up with flaws to get to the gooey center of a game, which could be why DA2 doesn't bother me nearly as much as it does most people.