"It was a brilliant performance from the team, defensively and on the counter attack we killed them, so we're really happy with the three points".
De Gea played down his role, saying it was simply a "good game for me" before focusing on the "confidence" United can take into next week's Manchester derby at Old Trafford.
David de Gea's lightning reflexes have been beyond doubt for some time now but with Arsenal's shot-count hitting 15 on target, it was clear when all was said and done who José Mourinho's side were indebted to.
Although Antonio Valencia's early strike and Jesse Lingard's brace ultimately secured a first win for United at the Emirates Stadium since 2014, De Gea's significant contribution can not be overlooked as the no.1 was in outstanding form between the sticks - beaten only by Alexandre Lacazette's strike early in the second half.
While his "studs up" tackle on Bellerin in the 75th minute was a poor one, Mourinho felt some of the Arsenal players had hounded referee Andre Marriner to send Pogba off.
"When you come from where I come from it was like two-vs-two, three-vs-three".
CSKA Moscow are set to visit Manchester on Tuesday, with Mourinho's men - who will still have Pogba at their disposal in Europe - looking to book their passage to the last-16 as winners of Group A.
"If I am a player, and I think with what we produced we have a huge potential, and we lose the game, we can not accept that. If you want to analyse well, watch the difference between them and us and then you will see", he said.
'That tells you what calibre of player he is.
"I don't think about the transfer because it is not me". But we have the experience to get better out of a game like that, you know.
"But now not being the player with the price tag helps me, it helps me a lot to focus on the field and nothing else".
'But tonight, what makes you angry is that you produce that performance and in the end you have nothing to show for it. "A bit disappointed with this colleague, Koscielny, with this kind of reaction", Mourinho said.
"There were fantastic individuals performances and collectively we were very strong". "What I saw was the best goalkeeper in the world".
"We are second in the table". We were not decisive enough.