The structure clearly isn't the same. For once Carrick was the only holder and he missed half a our games, we won only one game he didnt play in. We've not added Schweinsteiger and Schneiderlin, allowing us to play 2 of them at any one time, which is more cover than we have had since the days of Hargreaves. Not even close to being the same.
And using that logic about Schneiderlin, you might as well make that argument for anyone we sign, you can't have it both ways.
It's not patronising to point out the difference between half a Carrick in a 4-2-3-1 that was sometimes 3-5-2 and 2 of Schneiderlin, Schweinsteiger and Carrick in a 4-2-3-1 or 4-3-3. If one cannot see how we have far move defensive stability for the defenders, and I dont even count Darmian yet, then what's the point.