I think you are vastly underestimating mobility here. Ganon is VERY slow in attack speed and movement. Falcon is scarier because he can GET TO YOU. He can threaten your shield because it doesn't take 10 years for him to get within grab range.
As someone provided a better response I will address it later on, but I want to see how you respond to this anyhow. Falcon gets to you because he's fast. Great. BUT WHAT DOES HE DO ONCE HE'S THERE?
You can't autowin against his recovery just by jumping into it.
Firstly, the whole 'jumping into Ganon's recovery and hitting him" is percentage-based, so you don't always get to hit Ganon in the first place. Secondly, it's not like the Ganon player is going to see this happening and employ every singe DI trick there is to make sure he's sent at an angle that he will comfortably survive. Thirdly, not many characters can even hit Ganon with a move that is worth anything in terms of gimping Ganon, and most of the characters that do have no business jumping into his recovery when they can just gimp him anyway and save the damage (like MK). Lastly, wall jump tech and curbstomp > Falcon's recovery
and has more viable killing options in most situations.
This couldn't be further from the truth. Ignoring the fact that the vast majority of Ganon's moveset can be considered a viable killing option, Falcon's killing options are neutered by his own character design. Falcon simply can't use a good number of moves in most situation because they can easily be seen and reacted to or have such awkward spacings and timings that they drastically cut the amount of situations that Falcon can reliably use them.
He actually has some non **** matchups above low tier as well.
Because that's translated so well in Falcon's boisterous tournament results... oh wait. Falcon gets manslaughtered by Metaknight (grab releases mean nothing if MK's Uair stringing you and sending you offstage to die with Aerial Shuttle Loop) and grabbed by the Ice Climbers. In the matchups that matter, there is nothing that suggests that Falcon should be a tier above Ganon, and tournament results have only supported this.
"at least falcon can recover over the ledge when edgehogged".
Why are you trying to edgehog Falcon? All you need to do is keep hitting him offstage, just don't jump into Falcon's grab like an idiot and you can harass him all you want.
"at least falcon has a close range game with his jab and jab"
Falcon's fastest tilt is 1 frame faster than Ganon's fastest tilt (Falcon's angled F-tilt comes out on frame 9 and is -20 on block, Ganon's Dtilt comes out on frame 10 and is -21 on block), so no, Falcon's tilts do not contribute to a 'close-range game.' Falcon's jab and grab range is balls, so anyone with a good tilt that outranges Falcon's jab is going to be giving Falcon just as many problems as it would Ganon.
"at least falcon can catch up to campy characters even if he cant do much when he gets there"
Unless we're playing on RC or something, Ganondorf is going to find a way to engage the opponent. Patience is the key (not to mention that as Falcon's foxtrot is beyond awful, he can't even make good use of his speed without risking getting hit by a projectile before he can shield it).
"at least falcon isn't HORRIBLY crippled by RCO lag"
Unlike Falcon, Ganondorf actually does a somewhat decent job at planking. Ganon's Uair and short mid-air jump height gives him enough protection that he can decide when to return to the stage. If the opponent is abusing Ganon's RCO lag, Ganon's doing something wrong.
You'd be surprised how well sliding shield grab works, pivot grabbing works even better. auto canceled bair is ok in certain situations. Falcon kick should probably never be used, but I do it to mks tornado all the time. You are correct though he does have ****ty approaches and terrible priority which is what cripples him so badly, but we have up air lol. And playing on platforms helps our approaching handicap a lot of the time.
Dat 15 frame pivot grab with the overblown theatrics, yeah dat pivot grab.
Ganon has a really freaking good U-air and platforms help Ganon immensely as well. Ganondorf LOVES Battlefield (or at least I do, Ganon's space control is so tight on Battlefield, I love it).
Say you're juggling falcon and you miss.. what can we hit you with and make you regret it?
Depending on the character..
single hit nair -> jab -> grab -> follow up (typically a grab release)
single hit nair -> jab -> grab -> grab release knee = 26-28%
oooor the teddy bear combo...(which opens a whole new world into footstool combos) I hate combo names.
Problem with that is: everything you said relies on single hit nair, which basically reduces that option to whenever Falcon is really close to the ground. Opponents should already know not to mess with Falcon when he's close to the ground because of that jab, I'm talking about full-on aerial combat like if you threw Falcon upwards. Take away Falcon's ground options and fighting Falcon becomes so much easier.
If you don't fear the knee something is wrong with you...
Outside Wario, who can Falcon actually grab-release knee? I can't find any post that fully deals with Falcon's grab-release advantages, so if you could help me out with the actual data for that, I would appreciate it.
And with Falcon's 1-frame sweetspot window, awful space control due to how quickly he accelerates, and inability to follow-up into the move (unless if grab-release is actually legit), no I don't fear the knee. This ain't Melee, son.