I think Man Utd hold a slight advantage, man for man wise.
Barcelona got Messi, Man Utd got Ronaldo. Barcelona got Etoo and
Henry, Man Utd got Rooney and Berbatov, with Tevez as sub.
Barcelona got Iniesta, Xavi and Yaya Toure, Man Utd got carrick,
anderson and giggs/scholes.
It is in defence that Man Utd hold an advantage, as Man Utd had
the back 4 intact, whereas Barcelona got their full backs
suspended.
But then again, its the final, anything can happen.