pokoko on 23 June 2015
First of all, people overestimate Mario. Yes, there are millions of Mario fans but the Mario universe itself is no longer a massive draw for the average consumer. Mario fans are going to love a Mario level editor but people who don't already have a Wii U likely won't care.
Second, Minecraft is so popular because of freedom. It's almost limitless. That's not the same thing as a Mario level editor at all. The comparison is barely applicable.
It's going to sell pretty well but it's not going to grow the installed base or win over anyone who isn't already invested in the Nintendo ecosystem.
