The only thing I liked about GTA 4 was how fast you could make the cars go. All I would do in that game was drive cars down long stretches of road. I didn't care much for the rest of the features it had to offer.
gta 5 is pretty cool. it's filled with unnecessary details though. you know which ones i'm talking about.
GTA 5: Detailed animated boobs drawn and programmed by hundreds of guys who have never seen a boob in their life.