Reigning champions City moved back above the Reds on goal difference on Monday night with a 1-0 victory at Tottenham achieved courtesy of an early Riyad Mahrez strike.
"We look at last season, they (City) lost two games - at home to Manchester United and away at Anfield," he said on Sky Sports' Monday Night Football.
"They drew the Anfield game they lost last season and they play United in a couple of weeks. If we're being honest, they should have beaten United, they were 2-0 up and wasted a lot of chances.
"I said it with Liverpool last week: If you have ideas to win the league, who is going to stop them? The lesser teams are not going to stop them. It's too easy for them.
"To get seven points from nine already, it shows how difficult it's going to be. This decides the title.
"It (the Tottenham game) was an opportunity for a team to do something against them, and they can't.
"It could be an era of domination of Guardiola and Man City."