Man Utd boss Ferguson tells Ronaldo: Messi would never have scored that!
United took the lead when Danny Welbeck scored only his second goal of the season before Ronaldo hit back with a stunning header.
Ferguson said: "It reminded me of his goal against Roma in the quarter-final in 2009 because that also had unbelievable spring and power.
"No player can do that - not even Messi. Cristiano's a special talent and it's nice that he came into the dressing-room after the game to see his old team-mates."