Updated with week 49!
The gap now is basically 3m in favor of Breath of the Wild. Twilight Princess on Wii is falling like a rock, which should help Breath of the Wild even more.
Bet with Teeqoz for 2 weeks of avatar and sig control that Super Mario Odyssey would ship more than 7m on its first 2 months. The game shipped 9.07m, so I won