"No, this is not just any ordinary success. The scale of this success is many times bigger than what is visible with "MK8D sales of 459K units exceeded MKWii sales of 405K". Analyzing the scale, we realize that like-for-like, MK8D is mega-hit on a different scale altogether (maybe 5-10x better). On the launch day in the US, MK8D sold c. 459K units. By 31Mar’17, Switch had an installed base of c. 1.2m in ‘The Americas’ (and probably 1.5m by Apr-end). The earlier launch day record was earlier held by Mario Kart Wii (launched in Apr 2008). Recall that MK-Wii was launched 17 months after Wii launch (Nov-2006). My 31Mar’08, Wii had a global installed base of 24.45m (Switch was at c. 2.74m by ’17 Mar-end) and its installed base in The Americas was 10.6m (Switch was 1.2m)." - Jefferies equity analyst Atul Goyal
The Legend of Zelda: Breath of the Wild helped Switch get off to an amazing start, but it seems Mario Kart 8 Deluxe is really kicking the system into high gear. Let's hope this is the start of the Wii-like success that Nintendo is hoping to establish with Switch!