The Hammers took a first-half lead at the Emirates after Said Benrahma netted from the spot, but three quick-fire goals in 15 minutes from Bukayo Saka, Gabriel Martinelli and Eddie Nketiah turned the game on its head.
Arsenal are now seven points clear of second-placed Newcastle at the top of the Premier League table, though Manchester City could close the gap back to five points if they beat Leeds on Wednesday.
Moyes still feels Pep Guardiola’s side are the favourites to retain their title despite Arsenal’s excellent form, while he even suggested Liverpool – who are 15 points behind the Gunners – could be a contender due to their title-winning knowhow.
Asked if Mikel Arteta could become a title-winning manager this season, Moyes replied: ’I think Mikel might go on to be one. Do I think they’re going to win it this year? I’m not sure.
‘I think you’d be remiss if you don’t think of Man City. You’d be doing them down.
‘They’ve got a fantastic team and there’ll be other teams that are a bit more used to being around the top, maybe a Liverpool later on.
‘Not to say that Mikel isn’t building a side capable [of winning the title] but I think he’ll know that Man City will be the ones.
‘They’ll come here and they’ll keep the ball off Arsenal. Arsenal kept the ball off us tonight, Man City will come here and keep the ball off Arsenal and it’ll become a different type of game for them.’
On his side’s performance at the Emirates, Moyes continued: ‘We knew that they would get up on top of us. We wanted to try and get behind Arsenal, we did do.
‘We got in behind three or four times, one of sort of leads to a penalty kick. We did okay but we found it difficult to get any sort of build in our play and that was because of Arsenal having lots of build and a lot of the ball.
‘But, at least first half you can put up with it because you get a goal from it, you get something from it. You can see that they are working really hard.
‘A couple of decisions went for us. It did hit Cressy’s head, it didn’t hit his hand at all. We’re probably disappointed that it was even flagged up as a penalty kick to be honest. Just a couple of things changed in the second half and it changed the momentum slightly. That wasn’t the reason we lost but it didn’t help, that’s for sure.’
MORE : Mikel Arteta responds to Arsenal transfer target Mykhailo Mudryk watching West Ham win
MORE : Declan Rice rates Arsenal title chances after West Ham defeat against Premier League leaders
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