"Defensively United are rock solid," said the former United captain. "Ferdinand and Vidic are a really good pairing.
"It would be wrong for me to make comparisons to me and Pally - I will let everyone else do that - but you can see they are two excellent players.
"Vidic is also hugely impressive in the opposition penalty area, as his headed winner against Everton a few weeks ago proved.
"His desire to go and head it is a dying art. I'd always be disappointed if I didn't score eight a season."