ANY of the the CT characters would be suitable for a solo game EXCEPT Marle.
Princess Peach pulled it off.
That game can't be 100% legit. Even if Nintendo made it.
If Mario barely saves Peach time and time again with Luigi's help and without his help it's a miracle the day is saved, how in the hell is it that when the same trap is set up AND Mario AND Luigi are both kidnapped and suddenly Peach is able to save the day because she's PMSing throughout the whole game. Seriously, that's how you play and apparantly that can stop Bowser. If THAT can stop Bowser, then hell, any regular person male or female could walk up to Bowser and start ranting at him and he'd cry like a little baby in the corner. That's not even 1/8th of it.
Tell me how the whole thing can sound 100% true. How.
And if it is legit than honest to god, they seriously need a game where punches her right out and tells her "If you could do more work than me the entire time, why didn't you ever do something to save yourself?! I'd still help you but it'd make things a lot easier! WHY didn't you do this before?!"
In fact, I see that as a fitting ending to Super Princess Peach.
Mario getting mad would also suffice as an ending to the majority of the series. Instead of a simple kiss or anything "You risked your life for me! I'm gonna bake you a cake!" Seth McFarlane settled the best Mario ending of all, and the most realistic one personality wise.