The confidence boost of a five-goal romp cannot be sniffed at, but Chelsea were up against the most shambolic and disorganised opposition they have faced all season.
Steve McClaren's side even out-amateured MK Dons, from a full division below, in this woeful performance at Stamford Bridge.
To give Blues credit, there have been several times this season when they have faced substandard opposition and not taken advantage, so the will to win shown here is one major positive to take away.
But there will be few occasions in the remainder of his stand-in reign where Guus Hiddink's side will be allowed to play with so little opposition.
Though it was the defence, and in particular a nightmare 90 from Steven Taylor, which will have caught the eye here – the seed of Newcastle's destruction lay in midfield.
It was as if McClaren had watched a tape of Chelsea's win over Arsenal – the one in which Arsene Wenger seemingly advised his charges to offer Cesc Fabregas the space usually afforded a leper colony – and decided to follow suit.
The Spaniard was near his best, spraying out passes from the centre of the pitch, and setting up forward move after forward move.
But he was able to do this because nobody picked up the action-point that involved attempting to stop him.
Further up the pitch from there, Diego Costa's renewed lively movement caused embarrassment to the Magpies' back four; and Pedro capitalised, particularly as seen in the perfect long ball dropped over his shoulder for his second.
Eden Hazard, in his full return from injury, was less of a triumph, and one wonders what the score might have been had he also been on song.
Hiddink admitted afterwards that he was far from happy the slow, gradual return to form that had seen Chelsea draw so many matches of late.
But, like a cargo ship, Chelsea's turn-around from the uncharted waters into which Jose Mourinho had sailed them was always going to be a slow process.
The individual improvements here: from Costa (his seventh goal in eight league games); from Pedro (who could be said to have had great moments, rather than a great match); from Fabregas – have been part of an accumulation of confidence and ability since the start of the New Year.
We are still waiting to see the same from Hazard, who has been impeded by injury; and, of perhaps more concern, from Nenamja Matic – who seems to have been almost completely broken by his previous manager's dealings with him.
Another key feature here was the game plan.
One could imagine an alternative reality, with Mourinho still in charge: where Chelsea netted two early goals, the team was put into standby mode, Newcastle grabbed one back with 10 to go, and the match was placed on a knife-edge headed for an uncertain end.
That didn't happen here because Hiddink deemed it an unworthy end to the game.
And, as a result, Chelsea now have a positive goal difference for the first time this season.
In the scheme of things, that will matter little: it seems unlikely they will care much if that eventually take ninth place over 10th on the basis of that stat.
But it is yet another indicator of things slowly turning around at Stamford Bridge.
The result needs context, yes, but a win is a win – and this was a great win.
Whether or not Blues can do the same against opposition that actually turns up – well, that's what the next week or two will show.