Pogba inspired a stunning second-half comeback from United against City, but was hauled off after 58 minutes against West Brom.
The hosts threw everything at West Brom in the closing stages, but were unable to find a breakthrough that would have delayed City's title confirmation until at least Wednesday when United take on Bournemouth.
"In my experience you don't win titles with inconsistency, you win titles with quality but you win titles with consistency at every level. I saw lots of people in the moon because we won against Manchester City".
The France midfielder said: "I didn't want to lose against City, the loss from last season is still in my mind".
Their dominance of the league, with 28 wins and just two defeats bear that out, but the circumstances in which they have been handed the title were surprising.
With five matches remaining, they have a 16-point lead over United while maintaining a plus-68 goal differential.
Based on three points for a win, Manchester City's current points tally of 87 is the most by any side in English top-flight league history after 33 games of a season.
The France worldwide has found himself under the spotlight for much of the campaign after seemingly failing to produce consistent performances for Mourinho's men. The 47-year-old also took the German title three times with Bayern Munich, but he believes the unique strength in depth and physical demands of the Premier League makes this triumph among his very best. Not the defeat, I think it's too heavy, but not to win this match.
However, speaking before todays game against West Brom, Jose Mourinho has sent a message to the former world record signing, insisting he will become a more consistent player if he puts more work in on the training field. "They have lost only two matches because they are the best team and are champions".
"As much as this has been a record breaking season, this one's for you, the fans, this is why we do it!" said the skipper. Everything was slow, everything was one more touch, one more flick, one more trick, one more turn, ball lost and no continuity or fluidity in our football.
"We couldn't play fast, we couldn't think fast, everything was complicated", he said. "It is one of the things that we have to improve".