Am a gunner, but Man-U is still strong, particularly in big games they play well. Actually in their last match against Man-City I thought they will loose by a big margin. They played well and missed alot of chances- especially Rooney. Arsenal dont have a proper defensive MF right now, Song is in the Quarter final of ACN, Diaby injured. Against Man-U, Arsenal usually plays and at the end loose. All the same if Arsenal beat Villa, will have an upper hand against Man-U.