I prefer a 4-1-2-3 formation as most know which is a slightly more attacking variation of a 4-2-3-1. Recently when we've gone with just the lone striker, we've looked a lot more threatening and more balanced than with a 4-4-2 although it was noticeable that Dzeko dropped back really deep on a few occasions which effectively gave us a 3 man midfield at times.
I think if we need players to do this, that we have players better suited to playing as a No 10. The two wonder goals apart, we struggled to get through the massed Sunderland ranks and they caused us more problems than I was comfortable with, but ultimately its MP's call and you can't argue with silverware even though I think the starting selection and formation made life difficult for ourselves.
It was also noticable how quickly we went to a 3 man midfield once we were ahead and kept that shape until the end. Sunderland played like their lives depended on it and threatened us until the end which is understandable as it was their cup final metorphorically and literally.
Wll credit to Sunderland as they made ita final be proud of.