Satoru Iwata himself has officially stated on multiple occasions that Nintendo's strategy for their next generation will in fact incorporate a unified API, and that their gaming systems won't be like traditional handhelds and home consoles (as in, separate devices), but rather a 'family of systems' that are alike and will play the same games (thus solving their problem of low software output). He specifically mentioned Apple and their iPad/iPod strategy as an example.
This is not a point that's up for discussion in any shape of form, whatever random internet posters may think or like; it's the way they're headed.
Nintendo Network ID: Cheebee 3DS Code: 2320 - 6113 - 9046