I agree that reviews don't necessarily relate to box office success, but using Super Mario Bros. is a bad comparison. One is a 35-year-old worldwide phenomenon of a brand. The other is a new IP that nobody has ever heard of before.
I want Wish to do well. I really enjoyed it and I want to see more new IP's from Disney (especially because it's looking like the next few years is sequels galore). That said, it's looking like an uphill battle. The marketing I've been seeing is bad. They're making the exact same mistake they did with Elemental by focusing on the comic relief character (the goat is their new Clod) and not the emotional aspects of the film. I have no idea what's going on with Disney's marketing department but it needs a serious looking into.