If? I don't think anyone thinks the Switch will win. Also, the PS4 already won against the WiiU. Nobody banged on about how Nintendo lost.
Again... talking about overall sales rather than switch vs PS4.
Bet with flashfire926: I think switch will win November NPD, and he thinks xbox one will win (if ps4 is victorious, it's a draw). Loser has to state that they lost in the signature for some time.