Depends on what you look at.
If it were a little more powerful, I think it would have remained relevant for a little while longer, that means it probably would've ended up with a tad higher lifetime sales ignoring other factors. However, it would have been more expensive, which means it's early years could have had lower sales than it did, which evens it out again or worse. If it were more expensive to make because of the better hardware and Nintendo would've been forced to sell it at a (slight) loss, they wouldn't have made as much money off it as they did. I don't see any difference in the way third-parties would've treated it, mainly because they didn't care for the N64 and the GameCube either. The big userbase has never swayed most of them in the handheld realm either. The only upside would've been that the myth of 'Nintendo equals low-end hardware' probably wouldn't exist.
So:
Userbase; maybe, could've gone both ways.
Longevity; would've been a bit better.
Profit; would definitely have been worse.
Support; no difference.







