2. UB to edgeguard
it easy to time also it could put them in bad postion.
Umm how is it easy to time an up-B intercepting an illusion? Fox can shine stall before the jump and illusion pretty much whenever he wants.
3.F-tilt
good dmg and very easy to time sweetspot the egde too.
Damage doesn't matter. You can gimp Fox at 0 if you handle it right, and ftilt is rarely (if ever) your best option. Ftilt only has good knockback if you sweetspot it, which isn't that easy to time. Dtilt is much better.
4.A
easy to time but leave them to grab the egde most of the time.
How are they going to grab the edge? When Fox illusions 90% of the time he'll jump first and there's no way he's going to grab the edge if you jab him out of the illusion without a jump. If he still has the jump it's more complicated, but I would just jab again if he jumps at me. If he jumps backwards and illusions again just jab or dtilt depending on the height. If he drops down and up-Bs it's much easier to edgeguard.
5.B
hard to time(needs prep)but mostly kills if you pull it off
It's pretty hard to intercept illusions with neutral B because if the Fox is any good and you're sitting there charging he's going to go over your head with firefox if possible. If he illusions he might try to shorten it and your neutral B will probably miss.
6.USmash
i think you can time this aswell(need to test)
lol usmash? Fox doesn't die from usmash until well over 100 at stage level, even if it's tipped. And how the **** are you going to tip it unless they illusion at the perfect height and your timing is ridiculously good. I'm pretty sure no one has ever, ever used this to edgeguard Fox successfully.
If you're systematic about your edgeguarding it is very hard for Fox to get back at any %. The only situation I find a little tricky is if, say, you jab him out of illusion then he up-Bs very close to the stage. Too close to jump out and fair/up-B. Most of the time the Fox will firefox into you so I typically counter in this situation, but he can also go straight up, and there's enough lag on the counter that he can generally grab the edge. Jumping off and countering works sometimes, but depending where it hits it might hit Fox into the stage which he can tech, or even onto the stage. Running off and doing a reverse forward B works if the Fox is very close to the stage. Then follow up with another forward B, DJ fair, etc.
There's also the situation where Fox is using firefox and far enough away that he can shoot over the edge and fall to grab it, but low enough that he can also sweet spot if he so chooses (so that a charge neutral B would miss, for instance). I'm not entirely sure what to do in these situations either. If he's somewhat far I'll jump off and intercept with a nonsweetspotted fair, but sometimes it's not really clear what will work.
Any thoughts?