I have finished my first play-through of dragon age (warrior noble, doing another run on nightmare now with a mage and another with a city elf rogue), but I am still getting my tower is divinity.
Dragon age has a strong story and interactions and choices, it is a very solid game. but lacks the open world feel and might be a bit too oldschool. (elves, dwarves, reuniting the armies of the world once again, the orc-like darkspawn etc... it has been a little overdone.)
Divinity2 primary strength is its freshness, the quests are different, the creatures, the whole fortress/pet thing (DA:O has a warden keep addon but it really does not match the tower in divinity) and a few other details. Its weakness might be that there are less choices and interaction, thus less lasting value as you wont' be playing it multiple times.. or at least not as much as dragon age. (But then again I have not finished it yet, so it might be better than I have seen so far.)
In all cases, I am loving both Dragon age and Divinity. I consider them both must buys.
