Let's look at all these franchises entries on 3DS/Wii U.
Woolly World 3DS port-under 1m
Battle Royale/Rainbow Curse-under 1m
Star Rush/Top 100-under 1m
Ultra Smash-under 1m
They are all right there in the same tier.
Where'd you get these numbers for Awakening & Fates?
And I don't think I would put Mario Party in the same tier as Kirby, Yoshi, and Fire Emblem. Based on Super Mario Party's current sales and trend, it's closer to the A tier titles than the B tiers.
Mario Party is a bit of a Wild Card honestly. I wouldn't put it on the B tiers alongside the others I just mentioned, but I also wouldn't put it up on the same class as the A Tiers.
Pancho A. Ovies
Nintendo Switch in Japan (Media Create): 2018 vs. 2019
PlayStation 4/Xbox One/Nintendo Switch: 2018 vs. 2019