The story
The real season.
Guardiola's City went top on 16 September and never came down. Between 26 August and 27 December they won 18 league games in a row, a Premier League record. The run ended only in a 0–0 at Selhurst Park on New Year's Eve, and even then Ederson had to save Luka Milivojević's stoppage-time penalty. By Christmas they were 13 points clear of Mourinho's United.
The first league defeat came at Anfield on 14 January. Liverpool scored three times in nine minutes to lead 4–1 and held on for 4–3. That winter Anfield had found a new song for Mohamed Salah, borrowed from Dodgy's Good Enough, and he finished with 32 league goals, the record for a 38-game Premier League season. In April Klopp's side knocked City out of the Champions League quarter-finals too, 5–1 on aggregate.
Nobody else got near. On the final day Gabriel Jesus scored in the 94th minute at Southampton, and City became the first English top-flight side to reach 100 points: 32 league wins, 106 league goals, 19 points clear of United. It was less a title race than a procession.
Take City out, and the procession becomes a photo finish.