I think back to the Bristol City game away and how awful that game was (although we won). But in that game I think we lined up with a back 5 and the same midfield 3. With Roberts and Akpom basically slogging it alone up top.
By sacrificing one of the back three, and having Howson slot in when needed, allows us to play three up top. With Watmore and Tav cutting in and Bola and Dijksteel providing the width out wide, it has worked a treat today.