Chelsea legend Ruud Gullit says Antonio Conte is outshining Manchester City boss Pep Guardiola.
Chelsea have won eight matches on the bounce to sit three points clear of Arsenal at the top of the table.
Gullit told BBC Sport: "Of course what helps Conte here is that Chelsea are not in Europe.
"Compare the Italian to manager Pep Guardiola at Manchester City, who is at the other end of the scale.
"The Spaniard is too much of a tactical wizard, and he does it all the time.
"He keeps changing his system between three and four at the back and he is the kind of manager who puts players in three different positions in three different matches, which is too much.
"Eventually he will find a system and things will settle down at City, but it is not working at the moment, especially in their defence.
"I understand why Guardiola is frustrated because City create so many chances in all their games, not just in last weekend's defeat against Chelsea, and it looks unfair when they don't win.
"But football is not fair, football is all about winning - however you do it.
"One of the good things about the run Chelsea are on is that they are doing things the Italian way, by conceding hardly any goals.
"That's not down to luck, because Conte's tactics are designed to put the defence first and make his team solid behind the ball."