From what I've seen the Switch was keeping pace in weekly sales with the PS4 for a while and has started to drop away now, outside of Nintendo launching their own big games I don't see a great deal of third party support for the machine so far, at least nothing to write home about. I don't see the switch outselling this year, it's all heavily dependant on Nintendo's lineup of games I suppose and they at least seem to be supporting this far more than the WiiU.