In truth it was far too comfortable for the hosts and Noble has warned his teammates the performance was 'not good enough'.
The Hammers were never at the races and showed nowhere near the quality, urgency or desire that was on display in the win over Chelsea last week.
'We weren't on it'
And with bogey team Everton visiting Upton Park next weekend off the back of their 6-2 mauling of Sunderland, Noble has told the club's official website he and his teammates are under no illusions that they must improve fast.
"We weren't on it for sure - we weren't the team we normally are," Noble told whufc.com.
"The run had to come to an end, but it has come to an end in a disappointing manner.
"We've already said in the dressing room that we know we're a very good team with very good players, but it didn't click on the day.
"You're going to get games like that during the season, we're not going to go through the season unbeaten, but the manner in which we lost wasn't good enough.
"But all in all, if I'm an honest man, I'll have to say that we didn't deserve to get anything from it."
Honest Noble was one of the main culprits
Ironically captain Noble was one of West Ham's poorest performers at Vicarage Road and will know he as much as anyone needs to up his game.
Initially after being handed the captain's armband following Kevin Nolan's departure Noble's performances spiked.
But he has been very poor of late, even when the Hammers were in the middle of their seven-game unbeaten run.
He was out of sorts again at Watford and is under genuine pressure now Alex Song is back in first team contention and also has Pedro Obiang knocking on the door.
Captain's place under pressure
While Noble is a fine midfielder, many Hammers fans said Bilic was making a rod for his own back by making him captain when he is not guaranteed to start.
Noble can have no complaints if he is left on the bench for the visit of Roberto Martinez's side.
But if he does continue in midfield he must dig deep to rediscover his best form to stay in the side and inspire the team to get back to winning ways.
Play like they did against Watford with Everton in the kind of goalscoring form they were against Sunderland and there will be only one winner come Saturday.