Nintendo risks only if it kills DS too early: keeping it alive as entry level portable until 3DS will drop to cheap enough prices and future revisions will have better battery life and shorter recharging times, will allow, thanks also to 100% BC, a very smooth transition, with very high likelihood of leadership being kept.
The difference will be that Sony is the only competitor that, defying Ninty on portables, managed not only to survive, but profited too, and despite curiously repeating some obvious mistakes, it learns from most of them, so 3DS leadership will be less overwhelming than DS one.







