Pep Guardiola heaped praise on his rival bosses in the Premier League as the Manchester City manager claimed he has "never known this level before".
Guardiola's reigning top-flight champions are the runaway league leaders once more this season, sitting nine points clear of Liverpool going into the weekend – albeit Jurgen Klopp's side held a game in hand.
City created the gap at the summit with a 12-game winning streak in the league between October and January, which they embarked on after a 2-0 home loss to Crystal Palace.
That was the ninth run in the Premier League of 12 or more successive victories in the competition's history, with Guardiola responsible for four of those with City.
But the former Barcelona head coach believes the quality and variety of management styles is what makes England's top division different from any other in the world.
"I have never known this level before," Guardiola told Sky Sports in an interview released on Saturday.
"Of course, there are managers in Germany, Italy and Spain, but in the Premier League, these are the best managers, the elite managers. The quality, the preparation. The level is so high."
"The nice thing about the Premier League is that there are five or six different ways to play and, when you do it well, it works. It is not a pattern, teams playing one way all the time. Teams play differently even within a game, and you have to solve the problem.
"You cannot imagine the hard work that goes in behind the scenes. That is why it is so much more difficult to win games now than when I started 13 or 14 years ago.
"Compared to when I started at Barcelona, it has gone much, much further. The level has improved a lot. The quality, the methodology, the training sessions, the analysis of what exactly the opponent is going to do and what your team can do to punish them.
"Younger managers such as [Aston Villa's] Steven Gerrard and [Everton's] Frank Lampard, who were players when I became a manager, they are incredibly well prepared. They have a curiosity. They understand a lot. They study the reasons why, offensively and defensively.
"It is partly thanks to the facilities that we have now. The drones, the wide angles, the databases. Many things help to build a picture of who you are as a team and who the opponents are as a team. After that, you can take the decisions as a manager easily."
Guardiola has had success wherever he has gone, whether that be with City, Bayern Munich or Barcelona.
In fact, since the Spaniard took charge at the Etihad Stadium, City have collected 503 points in the Premier League – 36 more than second-placed Liverpool and 88 more than Chelsea in third.
However, the 51-year-old does not acknowledge his work as revolutionary and insisted some teams' biggest mistake is trying to replicate the identity of those who have previously had success.
"I did not come here to think I was going to change anything," he continued. "I did not do that in Munich either. I just do what I want. I want to influence my players. That is all. I am not arrogant enough to think I can control anything beyond my team.
"I remember years ago when teams would win the World Cup, whatever nationality, and afterwards we would all analyse the winner and say this is the tendency that we will see in the next years. Everyone wants to copy the winner. This is a big mistake. Football is not copy and paste."