The Red Devils played most of the game with ten-men after Nani was sent off just 29 minutes into the game.
“Everyone on the pitch worked their socks off and played fantastic football,” he told Sky Sports.
“We should have won the game. I think we were the better team and with ten-men for certainly a long time – fair credit to the players they were absolutely brilliant.
“I think we had a good thrust in the second half, we just didn’t quite get the ball in.
“We wanted to win the match, that’s what this title is about.
“We’re in good form, the team. I think we’ve been very consistent tonight in terms of performance level.
“We never dropped and I think we can be very pleased with that.”
Ferguson admits it was a correct decision to give Nani the red card.
“It’s a red card – he’s gone in double footed and you can’t do that,” he added.
“It was a naïve tackle, he’s not a malicious player as we know but nonetheless it left the referee with no option.
“The funny thing is we felt (we should have got a foul) seconds before it when Gabriel Agbonlahor went in with his foot raised on Wes Brown.
“We didn’t get the foul, the ball goes into the direction where Nani tackles and I’m afraid it was a bad bit of luck for us.
“I must say Valencia coming on was absolutely brilliant. He did fantastic.
“I think in fact he changed the game for us. He started penetrating and beating the left full-back time and time again.”