Sorry for keep you waiting! I was very busy, but now everything is ok.
Updated with weeks 16, 17, 18 and 19!
The gap grew in favor of Breath of the Wild by ~14k only. There were some flat weeks, but things started to get better last week and this trend will probably carry to the following week.
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