I misread or read too much into your statement. My bad.
I was considering the kindle as a present and dismissed it, I'm waiting for cheap, potent and more importantly more opened hardware wise (support for sd cards+ replaceable battery ) and soft (want vanilla Android). Still I'm impressed by its gaming potential (or any 7" device with decent specs) there are already plenty of video of gaming on the Kindle fire. It is somehow the first real ipad challenger, I expect it to push more developers to move more games from IOS to Android.
Stick it a blend of "mini fling" and "thumbies" and stylus and the devices should rock as a gaming device. To me it's already way more tempting than a 3ds. PSV offer another level of capabilities but the threat on the handled console is growing. I can't help but think that the space for handled is shrinking, PSV will outdo in the gaming department whatever tablet/phone that comes out for a while (actually the Xperia play V2 looked pretty threatening already) but it will likely impossible for Sony to out do what Android, IOS or Win8 provide to consumers on the other play fields. So I see a uphill battle as technical/input advantages for the PSV will shrink fast.
If Android take off as a gaming platform as much as the IOS then clearly Sony will have to adapt / expect lesser sales.
EDIT speaking of tablet I watched
this and this make tablets even more of a thread imo. This has amazing potential, bring some well thought accessories and its gaming even, next ready.