You guys should not count Kirby out just yet. We know it has crazy legs, and shipped 1.9m in just 4 months. I'm not saying it will definitely surpass 5m, but the absolute minimum would be 3m imo.
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