As many people have stated it all comes down to games in in the end, but i hope those games come to the vita for a number of reasons:
-superior graphics, AI, physics etc
-Better control option IMO: dual anologe sticks, touch screen on main display and touch panels... the extra DS screen is good as a map/menu viewer but im willing to sacrifice it for the above
-Better portable functionality IMO: the vita is bigger which is a con but all of the games on it will be available via download which is necessary for a handheld device in 2011. I'm not carying 3 catridges around with me for all the games , i may potentially play. ( however i dont really play games on the go)
-browser and other network support: Again, the ps vita isn't out yet so theres no direct comparison but having 5" multitouch screen is superior to what the 3ds is offering in terms of navigation. Sony also seems to be putting on emphasis on a online network than nintendo whos console launched without a eshop. Also looking at their other products ps3/psp, its likely the vita will have more online content.
Unfortunately nintys 1st titles exite me far more than sonys, so 3rd party titles may be the deciding factor. But again i feel like most experience could be had on the 3DS, would probably be improved by vitas hardware.







