Pep's dealing with a Liverpool side who are better than all of those teams, imo.
I think you're right in that Liverpool are more formidable than the rest of the top 5/6 from that era, but when you're looking at a league season then the potential to drop points against 4 or 5 competitive teams is more precarious than 1 super competitive one (+ our hex on them).
(****This is not to say I rate Mancini & Pellegrini > Pep!****)
They're CL winners, favourites for the CL final this season too, and have played every possible game available to them this season. Yet City will likely win a league. It's impressive as hell.
........Or is the fact that City will have played less games and will only win by the finest of margins actually not so impressive on closer inspection?
Should the Dippers have beaten us a couple of weeks ago; Pep would have ended up empty handed and the season would have been branded a failure for City!
.....There's also the spector of no CL that continues to loom over them. (Whereas this will be Klopp's 3rd final in 4 years and potentially win #2!)
They're essentially dominating a league with arguably the best side in Europe in it.
"Dominance" :
21/22: 1 point gap (City)
20/21: 17 point gap (City) >>>> One hell of a fucked-up season though.
19/20: 18 point gap (Liverpool)
18/19: 1 point gap (City)
Literally 1 point net difference since anyone else last won the league.
.......Obv. the trophy is what matters most, but there's perspective in the detail.
Chelsea aren't too shabby either, CL winners last season.
Domestically they're not the force they were 5 years ago and have struggle to scrape top 4 since Conte won the EPL in 16/17....
Pep's had lots of resources but has still done an exceptional job. I think he's a better coach than Klopp but Klopp is more suited to the underdog clubs, they're at the right teams essentially. Who you prefer will come down to personal opinion.
I guess the conclusive point to my ramblings is that all things considered I'd expect to see bigger margins from Pep to share the perspective that you have of him.