Man City remain a force, while Arsenal's malaise continues in a one-sided encounter

LONDON -- As half-time approached at the Emirates Stadium, Manchester City fans tucked away in the corner began to sing one of their favourites: "We are not, we're not really here."
Given their team was already 3-0 down, Arsenal supporters inside the stadium probably wished they were elsewhere too, but the broader point is that, on the evidence of those opening 45 minutes, Pep Guardiola's side are not where they should be.
City began the day 17 points behind Premier League leaders Liverpool, but...