The only way justice can be served in the universe is if the two manliest characters in Brawl have an even struggle.
Now let's see how I can make that happen:
--Choke is murder for Falcons. At early percentages you can d-tilt out of Choke for numerous comboing options, and at late percentages you can kill with Dash Attack out of choke. It's just a great move to have against him.
-Our aerials outrange his aerials (N-air in particular is great for Ganon in this matchup), so as long as you use them conservatively Ganon should be alright, but don't just throw out attacks as Falcon does have great speed to punish open frames.
-Gimping Falcon with Ganon can be done almost as easily as Falcon can gimp Ganon, as we do have the further-reaching tipman to abuse.
I don't know how specific moves match up like Ganon's F-air against Falcon's up-tilt, but that might also be worth mentioning.
Really, seeing as our movesets are nearly identical and we're using our strengths to the fullest (Falcon's speed and Ganon's ability to punish and damage like crazy), I don't get how this matchup can't be 50-50.
My favorite thing to do with Falcon is to use a whole bunch of jab-cancels and then pull off a "Show me your moves!" taunt if the opponent is jumping away. For the love of evil, do not get affected by this taunt. Ganon's manliness is what keeps him going and if he gets taunted at such close range, you're probably done for.