"Whilst their main players stay fit Manchester United are capable of winning the league."
O'Neill certainly wished some of the criticisms that have been levelled against United could be said of his own team now that United will definitely be top on Christmas Day.
Tom Cleverley's first Premier League goal at Old Trafford was followed by Wayne Rooney's fifth in four games to put the hosts in control, before Frazier Campbell grabbed a consolation against his former club.
"People keep saying we are weak in midfield but these guys are very good players," said Sir Alex Ferguson.
"Sometimes it gives me a little problem selecting the right two, although today was simple because (Michael) Carrick and Cleverley deserved to play after their performance (against Manchester City) last week."
"Tom has goals in him," said Ferguson. "As a younger player he always had a goal in him. He has got me three this season and I really do expect more from him because he is a nice finisher."