Honestly, if it was Real Madrid of 2014, Barcelona 2015, Pep's Bayern or Juventus with Pogba-Vidal midfield, they could have ripped Liverpool or Spurs apart.
Recently, City is the only club who's been more dominant consistently when you consider their performance, they created more chances, more possession and better team through 90 minutes in most of the games, they are just much better than Liverpool and Spurs. I feel like City could have gone to toe with Bayern 2013 to 2016, Real Madrid of 2014 or Juve 2015 to 2017.
The difference is City didn't have a much lucks on their shoulder like Spurs, United and Liverpool. More luck you have, more you'll have a chance of going through the next round.