Well I finished DA:Awakening last night, hard mode, with about 25 hours on the clock. That was with all side quests completed and watching all cut scenes and dialogues without skipping anything. Overall it was really enjoyable, but there was too little of it to feel fully immersed in the new story or get to bond with the new companions, who mostly feel dispensable. I understand why they wanted to break a lot of the links with DA:O and enforce brand new companions (apart from Oghren who has some very entertaining moments) but I think there needed to be nearer 40 hours of gameplay to achieve better immersion.
The relative lack of immersion compared to DA:O isn't helped by the fact that the game ends abruptly after the final boss battle. Without giving anything away, let's just say there's no epilogue where you can debrief and chat to you companions, nor is an epilogue save created by the game (so dunno how they intend to bolt on any additional DLC). You just defeat the boss, watch a very short cut scene, get given the epilogue text screens (some of which makes no sense whatsoever given your decisions during the game) and then the credits roll. Leaves a sense of deflation where DA:O left a sense of satisfaction. Shame.
So, where DA:0 is a 9.5/10 game, DA:A is only really a 8/10 for me. Still very good, but not great. It's a bit like comparing one of Iain Banks' masterpiece novels with one of his lesser ones. In the big picture they're both good, but compared to each other one has an epic ending and the other feels like the ending was written in a rush on the back of a beermat.