GTA IV is obviously an overrated game. I dare you call that storyline "movie level". Actually I once made a topic about how crappy it was and the forum's mods proved how stupid they are by listing games that have storyline (Chrono Trigger, FF series, heck even games that their storyline could be explained by a few lines was said "you kill kill kill" etc.)
One of the mods even thought I'm so wrong he registered to GTAForums and replied to my thread about it where EVERYBODY agreed with me. Well what can I do, only crappy games like Call of 10$ more despite it not being worth it get attention and it's overrated as hell. One game from 2008 destroys so many of 2009-2010 ones that's it's sad to see how graphically-based games become, while people **** at the storyline and the (repitive) gameplay of games such as FPS.
SA was better than IV in some points. Despite the whole game being about killing and other stuff.. it's just.. killing isn't fun while you're not angry at someone who like pissed you off or you're getting revenge. Actually, GTA VC, SA, and IV have extremely similiar storylines. Everything starts bad, gets better, then some butt screws you and you look for help half the game. From there you just rebuild your empire or whatever it was.
I can use my PSP as one. I still prefer the keyboard though. Never touched a 360 controller.