A better map
better driving physics
better radio stations
I could go on an on but basically better everything.
I only ever played through GTA IV once in all of 5 years or so of owning it. Within the first week of owning GTA V i already completed it twice. A total of 3 times now. And i'll be going on my 4th replay when it comes to PS4. All within ~12 months of the game releasing. I'll never go back to playing GTA IV.
* Better map ? Yes, probably because there is a choice of countryside, wilderness, underwater and city. However this advantage is still very flawed because of two important reasons - nothing much to see or do, and a low number of interiors.
* Better characters ? Ha ha, now that's hilarious. Forgettable protagonists that lacked depth (Trevor the worst in GTA;s history), and one of weakest antagonists in GTA ever seen. Sorry, hell no.
* Better story ? Now I'm rolling on the floor with laughter. With that incredibly boring FIB/IAA?Merryweather bullsh*t mess of a story, not a chance in hell.
* Better weapons ? No not really, it had a bigger range of weapons, not necessarily better though. Besides, IV had much better gunshot sounds and effects, and it had a Glock pistol (V did not), so for me personally it's a no. Neutrally speaking, I'd say they were equal.
* Better cars ? Yes, I agree. V's cars looked stunning.
* Better graphics, of course yes. V looks amazing visually, but this was expected, it's like 6 or 5 years older than IV now, come on.
* Better performance ? It all depends but I'm guessing you mean general technical performance. If so, see above, similar response.
* Better driving physics ? Nah IV wins that hands down. IV had better and more realistic car handling, better driving and better car effects. It also did drive-bys much better too.
* Better radio stations ? Hmmmm, it's close. V did have quite good stations, despite what others say, but IV's felt very much suited to the NYC-style vibe. I'd say a draw on this one.
* Better everything else ? No way. I just think IV did most things better that mattered to me most.