Difference between pool and Chelsea is that we've actually won something of note recently.
Neither Chelsea or City have been consistent. Coming 4th and 3rd being almost 20 points behind the leaders is not consistent.
Before last year the last time they title challenged was 2014. Compare that to title wins in 15 and 17. Neither team are consistent, we destroyed the league the year before and City did the same (even if they did it better). In the CL both city and Chelsea have got to the CL semi finals the last 5 years.