VGChartz Top Console Sales through 14 Weeks
NSW 2021's biggest competition this quarter is NSW 2020. NSW 2020 averages 536K for the next 5 weeks, so with 400-450K weeks, it's going to come close to exhausting it's 670K buffer. NSW 2020 gets hit big with supply issues in mid-May though, while NSW 2021 should have an advantage there and see a healthier SW release slate going into the summer. Will be a close race for H1.
H2 I think NSW 2021 will pull ahead with revision + Pokemon/Zelda/surprise releases coming in the Sep-Dec period.