Better players lead to opposition not being as brave to advance at the defence, leading to lesser opportunities for their defenders to fuck up.
Individual mistakes are present in Guardiola's teams as well but they have Messis & Mullers & Robbens to make sure they scored more than mistakes.
I don't understand the obsession of passing messages on sideline.
What would it fucking achieve that years of training & dressing room sessions didn't?
How would the manager sitting by right wing send instructions to Monreal?
How would player concentrate properly if the manager is shouting at him?
Not every players takes well to his manager shouting at what he is doing wrong?
It's a very mundane thing to pitch against Wenger even when not taking into account that Wenger does have a presence on the sideline.
Also it's an easy assumption to make that Wenger can't inspire because things are not going our way; but you can't say for sure, can you?