No, you're right, especially if it's more powerful by a significant amount. Only initially though.
I went back and looked at that article, somce some of it really was hilarious in hindsight.
I knew it was Vita's destiny. He basically said that 3DS wasn't even competition for Vita at all. No idea what that author was thinking.
I really want to see a repeat of that article.
If NX is a pascal-based Tegra device would it even be possible for a new PSP to be notably more powerful? Following up the Vita Sony would have to aim quite a bit higher resolution wise too so NX could actually end up with better looking games at lower res which would interesting.
If Sony were to release a brand new handheld(which I still doubt) the only goal would be to prevent Vita developers switching to primarily supporting Nintendo. It'd be entirely about fucking over their competition which seems utterly ridiculious.