Jose Mourinho said he was "happy" Arsenal fans could finally celebrate beating one of his sides as the Gunners kept alive their top-four hopes with a 2-0 victory over Manchester United.
The win was Arsenal manager Arsene Wenger's first in 16 competitive meetings with United boss Mourinho.
"I left Highbury and they were crying, I left Emirates and they were crying," Mourinho said of past games at Arsenal.
"Finally today they sing, they swing the scarves. It's nice for them."
He added: "It is the first time I leave and they are happy. Before they were walking the streets with their heads low.
"The Arsenal fans are happy and I am happy for them."
The managers first met in December 2004 - when the Gunners were still playing at their former ground Highbury - in a 2-2 draw.
"To have that record of winning so many matches is not normal. Normal is win, lose, draw," Mourinho said.
"Do you think I enjoy the fact a big club like Arsenal is not winning trophies? I am not enjoying that. It's a big club.
"Wenger is not a small manager. He is a big manager. So it's not normal and I really don't care about it."
Sunday's defeat leaves United four points behind rivals Manchester City in fourth place, and five points from Liverpool in third, albeit with a game in hand over the Anfield club.