'Our concentration levels are better. We have a settled back four and the whole team is gelled. We know the trophy isn't given out until May and, hopefully, we will still be there or thereabouts.'
The defeat was a bitter blow for Robson, who has now suffered two consecutive losses for the first time this season following Chelsea's win at St James' Park at the weekend.
The Newcastle manager still rates United as the title favourites, although he is refusing to rule out another side from the top-six taking their crown.
He said: 'At times they outpassed us and you could say they were a class above but it is no disgrace to lose here. They are still my favourites. But all the top six are still in it and it is a thrill that we are still up there at the right end.'
The only bad news for Ferguson was that he will be without Ryan Giggs for seven to 10 days after the Wales winger suffered a slight hamstring strain.
United's win came against a backdrop of the start of the intense speculation over who will succeed Ferguson when he retires at the end of the season.
While Celtic's Martin O'Neill left the door slightly ajar, Leeds' David O'Leary reaffirmed his commitment to stay at Elland Road 'as long as the chairman is happy with me'.
United chief executive Peter Kenyon confirmed Ferguson will quit in May. The Scot had indicated at the weekend that he could change his mind about leaving, but Kenyon reiterated he will start the search for a replacement soon.
Kenyon said: 'Alex is still suggesting that he will retire and we are confident we will get the right man in place by the start of next season. We will start that search very shortly. The new man will start when he retires. There will be no overlap.'
