^On regards of your thoughts about Ganon not being able to win against any decent Rosalina or Sheik player, it's technically possible to if you can dodge their kill set-ups, get to 150% then get a read straight out of your ass to net a kill, or in Rosalina's case, break in the advantage, take away Luma as well, both of wich can shift the match in Ganon's favor if Rosalina can't scrooge, or respond to platform pressure(she must be out of Up B kill range most of the time as air camping might do the trick to dodge shield stab/break if the platform is too high)
Technically Manon is dead everytime he flies offstage, especially against Rosalina who possesses three options to cut right through his recovery, + she can just throw around random spaced FSmashes even if that's the most susceptible if read.
Ganon may as well steal a stock with his new wizkick, even if this is literally his only option in mid-range combat with Luma around as the rest gets cut by Bairs
So it isn't literally helpless, even if I used to think that the match-up was close to 100:0(and still think that), just in virtue of the fact that he can actually net a random victory here and there