Bioware here. It seems almost to a man that people who like a good storyline will go with Bioware (like myself) whereas people that want as a big and open world as possible will go with Bethesda. Playing Bethesda RPGs almost feels like a one player MMORPG. Most people don't really spend as much time following the storyline in a Bethesda game as they do walking around looking for loot in big open areas and killing the same enemies over and over. It really comes down to what you want out of your RPG.