As of the 19th there have been 16 weeks since the start of the year. The Xbox One has outsold the PS4 in the U.S. 4 times according to VGCharts.
That's not frequently. It certainly doesn't help your point in the OP that the Xbox One is being outsold in it's only strong market 75% of the time.
Bet with Adamblaziken:
I bet that on launch the Nintendo Switch will have no built in in-game voice chat. He bets that it will. The winner gets six months of avatar control over the other user.