No the whole "its easier for them to be a fighter" argument is irrelevant. Look at Villager, look at Mr. Game & Watch. They weren't chosen because they had an easy moveset to make.
This reminds me of a long time ago when someone on this forums thought Biff Atlas from Luigi's Mansion would make a good fighter because he looks like he'd be good at fighting. I said it's not about who'd make a good fighter, it's about who's an important character. So F-Zero being a racing game doesn't mean shit. You could make Excitebiker a character if you really wanted to.
This reminds me of a long time ago when someone on this forums thought Biff Atlas from Luigi's Mansion would make a good fighter because he looks like he'd be good at fighting. I said it's not about who'd make a good fighter, it's about who's an important character. So F-Zero being a racing game doesn't mean shit. You could make Excitebiker a character if you really wanted to.