i disagree, the way we play is very different. the automatic patterns and combinations we play (or don't play) are totally different.
as for chamberlain, i guess he has the attributes to play as an AM, but he gives us exactly what we need out wide, so i don't see why we'd move him now. he might not be as sloppy as ramsey, but that's a marginal improvement, while we'd have a gaping hole out wide.
i also haven't seen enough of his awareness under pressure to gauge how well he'd protect the ball when played centrally.