Just for the record this should probably be in the match-up threadJigglypuff's weight compared to Ganondorf's strength brings this match-up up to a neutral.
Ganon doesn't have to approach at all in this match-up, none of Jigglypuff's moves forces him to approach. Pound is a good move, it has range and priority, but it's still shieldable and punishable. Which really shouldn't be a problem to do.
No Ganon will ever approach with Gerudo, especially not against characters with good aerial speed, such as Jigglypuff. There are other ways to land it, such as bait and trap. Plus when we do land it, you could count on a 16-21% damage chain, possibly more, as you get a jab or DTilt right after. If we manage to Gerudo Jigglypuff at around 70%+ passed more than half the stage, then you could only wish to survive our FTilt.
Gerudo may be hard to land, but once it's land, you're taking about half the percentage it takes Ganon to kill you.
But saying that, both characters have the ability to **** each other...they are on COMPLETE opposite sides of the spectrum....VERY even match IMO, but the player with the higher skill level will make the match-up look pretty one sided.