"Of course you have to show character," he asserted. "Sometimes even when it's not happening for you. You have to defend and I think the whole team was pushed to the limits physically. It was a hard game and the pitch did not help.
"Again, we went 1-0 down, and it was not a great start, but I think we had a spell of maybe 20-30 minutes of good football where we had a few chances and scored the two goals. We stopped after that. I don't know why. The last 10 minutes of the first half, we just stopped but sometimes you have these type of games and you still have to win."
Vidic also praised team-mates Rooney and David De Gea for their contribution to the hard-fought success.
"Wayne is important for the team," said the centre-back. "He is working hard. Obviously, he scored the goals and I think the more games he plays, the better he is. We need him, especially for the second half of the season, as we need all the players to be fit. We have a good squad now and it's going to be hard for the manager to choose the first XI.
"It was a great save from David [to keep out Rickie Lambert's free-kick]. Actually, I see the ball in the net but instead it was a magnificent save. He showed he has the talent. He is a good keeper and I think the more games he plays, the better he is going to be."