I think theyre just as good in different ways. Theres nothing to say people cant like both. If I had to pick one I would pick the DS because I like the games better. I didnt have a DS for a while because I sold mine to get the lite, and while I didnt miss it (almost considered not buying the new one) I still prefer the games on it to the PSP (I barely use my PSP at all) different things appeal to different people so while you say the 'DS has nothing on psp' doesnt mean that everyone will think the same, they arent even really comparable being very different systems. I really dont think Nintendo are having too much trouble selling them.