If that club wasn’t Chelsea in the state it was in, you’d be right. But it wasn’t a normal situation of walking into a top club with a balanced 24 man squad and a sane-ish person at the top
He walked into the most chaotic version of Chelsea Football Club that has ever existed. Run by a lunatic Yank who makes the Glazers look like, well, our very own Sheikh.
Nobody could manage a squad that size and with that many new faces all squabbling with each other. Tuchel was already struggling to handle Boehly FC before that influx happened.
If-and-when Potter gets to manage a sane top club, we’ll test your hypothesis. But that hypothesis simply hasn’t been tested yet, because of numerous extra variables working against him.
It obviously Has been tested. That's like arguing Mark Hughes is every bit as good as Pep Guardiola, just hasn't been tested enough to show he is not.