The Liverpool boss conceded their big rivals have a different and more defensive style under their Portuguese manager.
But he insisted that until Anfield’s crowd-pleasing style starts yielding trophies to match Mourinho at Old Trafford, he will refuse to be drawn into criticism of more negative tactics.
“I know how the situation is and what people are saying they play a specific kind, we play a specific kind of football and now everyone makes a big thing of it,” he said ahead of today’s lunchtime clash at Old Trafford.
“But it’s all about winning and they won two titles in the last year. There are different ways to win football games but we have another history in the last few years.
“In this moment it’s always ‘Liverpool are good but…’ We know that. We don’t like the ‘but’, we live the rest. That’s our situation. For us it’s the only way.
“What doesn’t help us we have to ignore. We just have to use the skills and the talent and attitude of the boys to be as successful as we can before we are obviously successful.”
Klopp and Mourinho both guided their sides to League Cup and Europa League finals in their first season in charge, the former in 2015-16 and latter last season.
But while Man United grabbed two pieces of silverware, Liverpool were beaten in both finals, something Klopp believes helped shape the club’s current style.
“We couldn’t do any different here, nobody would accept it. Playing very defensive and not being successful just doesn’t work,” he said.
“We have to convince the people first with our style of football. We have so many fans all over the world who watch us.
“They have to get something if they don’t get silverware at the end of the season.
“If Liverpool won the league then after the season no one would ask how it happened.”