Speaking as someone who has played through Dragon Age: Origins eight times and Divinity 2 five times, I can truly say that Dragon Age Origins is the better Role Playing game.
Your opinion is not fact.
Remember what "role play" means. Yes there is role playing in Divinity 2 but not to the extent of Origins.
The definition of "role play" tends to change depending on what people personally value the most in a RPG. Ask on Bethesda forum or BioWare forum and you'll get an entirely different answer. What you think it means, isn't the absolute truth.