That's where you're wrong. I don't know how can you conclude something like this. Asamoah few times when played there, was simply fantastic; better in duels, quicker, good shot, decent enough pass, always present and in the midst of our actions. Marchisio, face it, apart from half a season in 2011/12 was more miss than hit as a b2b midfielder. He's too inconsistent player for that role. This new holding midfielder role will suit him much better.
