Wolves beating the defending champion Manchester city, is something I didn't see coming, I believe a lot of people too didn't.
That's just the beauty of the game of football, the two biggest teams in Manchester dropping points to lesser teams today isn't funny at all.
For Manchester city, I would just say wolves where just lucky, but crystal palace played brilliantly that first half of the game, as Manchester United where the good side at second half but then palace had the day.
It was really beyond everyone expectations, for Manchester United I'm not surprised they got such a bad result, even though basically they should have won the match because they were playing at home. But for Manchester City, it doesn't make sense at all, I agree with you who said that Wolves were just lucky to beat them, we can also see that one of Wolves goals was an own goal scored by Ruben Dias.
BTW, don't forget the result Luton Town got today, they finally got a good result in their sixth game in the PL. Now there are 3 teams left who don't have a win on their record for this season, they are Bournemouth, Burnley and Sheffield United.