Put the remakes of Pokemon Diamond/Pearl or the third version of the 7th gen on Switch and it will sells 2 millions at best.
Put them on 3DS and it will sell 10+ millions easily.
That's why Black and White 2 released on DS and not 3DS even after 3DS launch. I don't see Nintendo risking to slice its game sales by 5 until the Switch is well established.
That's why I never believed the Star rumor. It makes no sense financially for Nintendo and Gamefreak to lose money. People love pokemon but won't buy a 330 euros devices juste for it alone.