Yes, not every Zelda game sells like those 3, and not every game with Mario in it sells great either, but the point I'm making is that only these old Nintendo IPs are able to get critical acclaim and sell huge numbers. Nintendo's devs just don't have what it takes to get results without nostalgia it seems.
Except they did get critical acclaim and sell huge numbers. Splatoon 2 likely has a 50% attach rate when you factor in digital. That is HUGE, and when Sony only had 20 mil consoles in the wild, it failed go come close to those numbers with any of their 1st party games.