Actually
PSP also has built in Wi Fi. (i bold that cuz people dont seem to realize it or keep forgetting it.)
PSP also has a built in USB 2.0 port to connect to PC's Cell phones, PS2/PS3
As far as voice com goes, i would NOT want that. and im surprised nintendo put it in.
When your on a plane, the guy next to you is going to smack you one if your talking to your damn gameboy during the trip. If your in a car ride with someone. do they really want to hear you talking to it?
maybe other ppl will. but i would never use it. i'll leave that function on my PC.
But if you must btw, since the PSP has a usb port, you can just plug in a headset from the PS2 with a mic and heaphones together.
Games. as far as i've seen are a lot more interesting on PSP.
so far games on DS look like they been done before, expecially a remake of mario.
PSP seems to have some newer games like GT4, MGS, Viewtiful Joe (yes, VJ is going to kick ass on PSP

)
Me personally IF i were to get it i'd be getting it for its other fuctions as a media player tho. i've wasted too much money already on gameboys that i never touched when i got them.
and crash. thoes were pretty bad comparisons man. lol. come on. seriously. But i do understand your point and is something ya never know about. people said the same when PS1 was coming out that a new guy would never make it with the likes of Sega and Nintendo.