I think you’re laboring under a common and understandable misconception that the brain produces mind. I don’t think there is, however, any proof that it does — isn’t it really more an article of faith based on the rather weak “what else could it be?” form of argumentation? A crude analogy would be believing that the Super Bowl is produced by your television set, simply because that’s where you observe the game. No amount of analysis of the circuits of the TV set is going to reveal even the rules of football, much less predict the outcome of a particular game.

Human thought may or may not be “superior”, based of course on your definition of superior. Is human strength superior to that of a bulldozer? I will point out that humans control bulldozers, not the other way around. Consequently, bulldozers must be a function of (in the sense of “derived from”) human strength. Consequently I would argue that humans are certainly supreme over (superior to) bulldozers. Same with “AI”.