One thing I have noticed that Wenger gets blamed/credited for things at the club I have never seen another manager criticised/credited with. It's truly astounding at times that he gets the blame/credit.

Stadium moves
Stadium sponsorship deals
Commercial enterprise
Marketing architecture
TV deals
Ticket prices
Being in charge of the board
Blocking Usmanov/Welcoming Kroenkeeeee
All club press releases
The colour of the seats in the stadium

and that's not to mention the tactics, purchases, wages, transfer fee's, kit colour, youth and recruitment policies and so on. He is either the busiest man on earth or many fans seem to be over doing it a little.