I got Super Mario Bros. Wonder day one and it made me realize I don't like Mario nearly as much as I thought I did. And I already knew I liked Mario less than most people. It kinda made me realize the only games in the series I truly loved were Super Mario World and Bowser's Fury. If you include the alternate character spinoffs you can add Yoshi's Island to the list.
It's definitely the best 2D Mario since NSMB DS, there's nothing wrong with it and it's the most creative 2D Mario since World...but it still fails to stick in my mind the way Kirby games, Sonic games, Mega Man games, and more do. It was fun but it didn't wow me and I thought it was too easy (am I crazy or are 2D Mario games easier than Kirby games?) I'm glad I played it but I wish I picked it up sometime in the upcoming period when the Switch is completely removed from being current but not old enough to be retro.
What I've noticed about myself is that I'd pick a Sonic game that's considered "decent" or "debatable" over a comparable Mario game that people consider a GOTY candidate easily. with very few exceptions. And while Wonder vs. Superstars is an exception, it's only because of how godawful Superstars' bosses are.