With the triumph, City have become a three-time Premier League winners - a feat they are achieving in seven seasons.
Realistically it was always a matter of when and not if City would become English champions for a fifth time following a dominant season from the blue half of Manchester.
Following a promising start to the season, United looked as though they were going to challenge for top spot.
Henry said that Pogba's performance against West Brom was an opposite to that against Manchester City which saw him score two goals in the encounter.
Alexis Sanchez wasn't the worst player in a red shirt and tried to spark his side into life.
City had moved within touching distance of the title with a 3-1 win at Tottenham on Saturday. Anthony Martial and Marcus Rashford need to be more consistent.
Manchester United are bound to be linked with a host of players in the coming weeks and months as the summer transfer window gives Mourinho the chance to significantly bolster his squad.
"I have won titles, I would not be happy if someone say won title if someone lose a match".
"Eight titles are eight titles and three Premier Leagues are three Premier Leagues". Probably because I won eight championships, I was not on the moon with the victory against them.
"We were masters in complication, everything was complicated", said Mourinho.
It was a kind of collective neurosis which unfolded, and it was another example of these players lacking believe themselves and Mourinho lacking a clear attacking plan. In sealing the league at this stage, City matched the record for the earliest title win, held by United since 2001. The Baggies can acquire a maximum of 36 points with four games left in the campaign, but their fixture list is the toughest of the lot with matches against Liverpool, Tottenham Hotspur, Crystal Palace and Newcastle United - all of whom are in good vein of form.
West Brom, to their credit, also kept probing forward but they lacked the class required to really open United up at the back.