No doubt that Chelsea has improved really well in terms of performance. But there is nothing to accolade Maresca here. Panathinaiko is a club with low performance compared to Chelsea. They are still struggling in the Super League Greece so I dont expect anything much from them. Mudryk, Nkunku, and Jose Felix are not second-team players if you do watch Chelsea football. They are the problem not having good performance that they keep coming off the bench. Meanwhile, this is a game I expect to win from Chelsea and they did not disappoint any club in the EPL that can win Panathinaikos so its no big deal buddy.
What point are you trying to prove exactly, are you saying Maresca should not be praised for this winning, how do you cheer a manager up? I think is by praising him when he prove a point that he can do more than we expect, be it as it may, Maresca has been doing great so it doesn't matter if the team be played with in the UEFA conference league is weak or strong in their club side but what matters is Chelsea has won and that's it, you will be surprised that this same team can struggle it out if eventually it were to be other EPL teams they played this match with, though I agree with some of your observation that the Chelsea players you mentioned are not not in their peak, i hope they improve soon unless the want to remain irrelevant in the team.
You expected Chelsea to win and they won to meet up with your expectations, what if they failed, won't you want to blame it on the manager, though it's the manager's obligation to keep the team intact, up and going with good performance that be gets good results, so saying any club can win the team Chelsea played with look as if you weren't satisfied with the result so far, I don't agree with you that any team in the EPL can win that club, though its your opinion not a public one.