Mkhitaryan, who completed his move to Arsenal from United last month in a swap deal which saw Alexis Sanchez move in the opposite direction, said Wenger is a more compassionate coach than Mourinho.
“Mourinho required a lot from the players,” Mkhitaryan told SFR Sports on Friday.
“A lot, he was very hard. “Arsene Wenger is friendlier, he understands, can think about players’ situations, is calmer. That’s the difference.”
“I think I left an impression in Manchester, although I had difficulties,” he added.
“We won three trophies in a year and a half, it’s not every club that does that.
“We won the Europa League final, I scored a goal. If people say that I have not had enough success it is their opinion, but I can say that I had a lot of success at the club.”
The Armenia international provided three assists on his full debut during last week’s 5-1 win over Everton at the Emirates and summed up the difference between his two most recent bosses by contrasting their approach to man management.