I have played Ego Draconis and Dragon Age: Origins. I have not yet played Awakening or the remastered version of Divinity II.
I can say that they both have their own strengths.
Dragon Age is a party-based RPG where combat is a matter of pausing and making decisions.
In Divinity, you are on your own and combat is a bit more actiony.
Dragon Age is class-based whereas Divinity II is not. You can make a kind of hybrid mage-warrior-priest combination in this game.
Dragon Age takes place in a world with incredibly detailed lore and has a darker, more serious tone. Divinity feels somewhat lighter in this regard, but it also has a bit more fun and doesn't take itself as seriously. The stories are both equally grand and epic, though.
The storyline in Dragon Age can really change and there are multiple possible endings. In that sense, Divinity is a bit more straightforward, although you can solve many quests in different ways.
You'll definitely be more free to roam around in Divinity II and there is much more to explore and to discover. Dragon Age, by comparison, takes place on very small maps.
As a lover of epic fantasy, I love them both. As games, they are quite different but both quite enjoyable in their own way.
