Updated with weeks 29 and 30!
The gap grew only about 8k in favor of Breath of the Wild these past 2 weeks. As we head near Odyssey's release as well as the holidays, the gap should return to grow faster again.
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