Massive
Smash Champion
What is this, Schrodinger's fox?if you space so he misses the nair, he can just overshoot it.
If you powershield, he's fox and shine is frame 1.
SDI, he can just reposition himself so that you can't really punish him.
you can hit him out of nair, but he can always bait crap then nair->shine.
either way, fox never has to approach. He's probably the strongest character both defensively and offensively. Nobody should be able to approach if he plays correctly.
Fox cannot commit to 2 approaches at once, if he could he would win every tournament.
It is not possible to play a "perfect" fox for man or machine. Even theoretically perfect play does not mean you don't have to make decisions that make you vulnerable.
Fox has an advantage over a lot of other characters, but even played perfectly, and somehow knowing all the opponents moves in advance wouldn't make him invincible. There are still times even when the best foxes in the world mess up or leave themselves open to retaliation.
I mean, How many high profile tournaments do you see fox win big tournaments? NOT MANY.
He is ranked highly on the tier list because he does well against everyone and will place reasonably well in bracket, but he's not usually the one winning it all.
Stop theorycrafting and actually play the game. You're doing yourself no services by trying to justify losing to fox as inevitable.