The Football Association announced on Thursday that it will not take any action against the 70-year-old.
"Should you behave like that? No," said Wenger, who was sent to the stands by Dean for kicking a water bottle in 2009.
"I did not always behave like I should and you can call that a bad example, yes.
"The message it sends out when you look at the pictures is just not to behave like that.
"We go sometimes overboard on the touchline and when we do it we have to be punished, it is as simple as that.
"(If) it is me or Ferguson or anybody else in the world, the rules are the rules. It is not rules for one person and the rules for another person, it is the same for everybody."