True, while mainline Pokemon has consistanly sold more than mainline Mario, there has never been a Pokemon Kart or a Pokemon Party (that I know off), or a Super Pokemon Galaxy type platformer, Mario is one of those characters that you can do just about anything with. But that's not to say Pokemon isn't capable of that, the Mystery Dungeon series and especially Pokemon GO is shining proof that you can, but I don't think Game Freak or the Pokemon Company have really wanted to.
Hardware Comparison Threads:
Current Thread
Is Hardware Getting TOO Powerful?
Older Threads:
PlayStation/Xbox/Switch: 2022 Edition
PlayStation/Xbox/Switch Hardware Battle: 2021 Edition!
PlayStation 4/Xbox One/Nintendo Switch: 2019 vs. 2020
PlayStation 4/Xbox One/Nintendo Switch: 2018 vs. 2019
PlayStation 4/Xbox One/Nintendo Switch: 2017 vs. 2018
PlayStation 4: 2015 vs. 2016 vs. 2017