Yeah, I don't think a tablet is the best place for "productivity". For 500 or more you can get a netbook or even a full laptop that is much better for that and equally bad for games. Anyway, writing text documents is much more, then. Okay!
That's beside the point. This thread is about tablet vs. dedicated gaming handheld, not vs. netbook. A full desktop can do more than any of these devices, but I'm not drawing comparisons. The point is that the iPad will allow you to do a lot more. Don't say that non-gaming functions are unimportant, they are. Otherwise, people wouldn't care about apps like Flickr, Facebook, Netflix, Youtube coming to Vita, right?