The methodology seems sketchy. If this ai is just scraping tweets for mentions it may not know the difference between Mario or East side Mario's (Italian restaurant chain in Canada) I don't know anyone up here who'd say Mario is their favorite character in video games. It's could also baised if a game had recently come out featuring any if these characters around the time of polling.
The entire thing can be skewed from just advertising by companies. AI sucks balls for legit information. I'm sure there was no actual humans involved in this.