However Klopp, whose Liverpool sides have been pipped by City to the Premier League title on more than one occasion, said dismissing the treble winners as challengers would be a huge mistake.
"Arsenal are fighting and had a similar experience [to what] we had," Klopp added, referencing Arsenal's 97th-minute winner to beat Luton Town 4-3 on Tuesday. "It feels really good but anyway you have to start the next game from 0-0.
"Aston Villa is incredible. [Manchester] United is there, don't play yet maybe exactly the football whoever wants -- the media or whatever -- but they have points like crazy."
Guardiola admitted his side are "struggling" to rediscover their title-winning form as they seek an unprecedented fourth-straight Premier League trophy.
"We know what's our level and as a manager we have to find a way to win games. We're struggling a bit. I'm here to help them," Guardiola said.