I have FC4 its a great game if you like open world fps there is alot of things to do the main campaign makes up about 25% of things to do Dragon age inquisition on the other hand i dont have but definitely am getting for Christmas i looked it up apprently the main campaign is 40 hours long and if your into the completionist like i am there is about 200 hours of gameplay there So basically go for what you enjoy the most FPS or RPG neither are bad games its just preference