"They were dominant and dominant and dominant and it looked like it was dominance without an end.
"Real Madrid won the Cup final against Barcelona, Real Madrid win the Super Cup against Barcelona, Real Madrid won in Barcelona and Real Madrid won the championship which is the historical championship of 100 points and 121 goals."
Mourinho also guided Real to the Champions League semi-finals in all three of his seasons in charge.
"We couldn't get the Champions League which was an ambition but it's very difficult to do it," he added.
"You never know when you are going to do and it's so difficult at Madrid that before I arrived they couldn't reach not even the quarter final for six years.
"We got into the semis, we couldn't win it. Other teams did it, I'm happy Chelsea did it, I'm happy Bayern did it because they deserve it after such a fantastic season.
"I can say with pride that I managed a big club like Real."