He doesn't fox cannot gimp diddy unless he is forced to recover from down below, and even then you have to shine the barrels directly, or when they are coming up, which is not easy. Fox gets gimped by diddy more than he gimps diddy. Peanuts kill the phantasm like they do falco's, bair his up b into a stage spike, you can barrel spike his up b if you carefully time it as well. killing fox's second jump or phantasm by charging your peanut gun vertically will force him to use his up b, and you know what people can do to that. Also fox barely moves when he trips, which makes us have a much more fun time combo'ing him. In addition he falls fast, meaning from a throw we can do alot to him once he lands even if he techs the fall. he can not approach at all without it being able to be punished, and his laser camping is too laggy to use on the ground against diddy and when you SH it he'll only take 2-3 damage when diddy charges at fox. diddy gimps space animals when you use your projectiles right, I'm not even kidding. Even though fox has the best recovery out of the three, the same tactics can still be used on him. I still firmly believe its 60-40 in diddy's favor but I tend to exaggerate things and no other diddy player believes me lol. I play a good fox very oftently and he knows about the shine gimps and how to fight diddy.