I’m not going to go with the complete “Dragon Age 2 was rubbish” thing, but in the spirit of this thread, Dragon Age: Origins was better than I was expecting while Dragon Age 2 was not as good as I was expecting. For a lot of the changes, I can see why Bioware made them, even if they didn’t really make the game much better, but what really killed it for me was the environments.
Opening near Lothering, where everything has been green at the start of the first game but now everything was brown, probably less than 2 weeks later in game-world time, was not good. Kirkwall looked quite interesting when I arrived with the grand architecture, which just developed into very plain areas, all the same colour of stone or that yellow dirt/mud colour in the slums. Some areas looked good, like the Deep Roads or the coastal area, but that only showed up just how bad the rest of the game areas looked. Seeing the areas look so much less real and unique than the first game really broke the sense of immersion for me, and ultimately spoiled the rest of the game for me.
TL;DR: Dragon Age 1 = beautiful world and so believable, Dragon Age 2 = ugly world and so didn’t seem real at all.