GTA V vs. SR 3
Oooo.... that's a tough one
On one hand, gritty reality with amazing facial animations and highly detailed worlds compiled with great story, and fun driving physics (not to mention, fun physics all round). On the other, giant purple dildo's, cars that suck people up and launch them, VTOL aircraft, airstrikes, and everything a gamer wants.
I loved GTA IV, but the flaws came when customization came around. SR2 had co-op, and better outfits. It also did skydiving before GTA
Assuming much has been improved, GTA V will more than likely address the flaws in the previous game.
SR3 on the other hand releases earlier, and has already shown us the massive improvements...
It's not a lot to go on right now. I need more information D: