I agree and like to add that on the other side there isn't nearly as much criticism of Obama because he won and because of plain pseudo-progressive stupidity. You know the type, people who think that Obama is a great president because he has some rhetorical skills or people who think that he is a peacenik just because he won the Nobel peace prize. You evaluate politics by the naked outcome and not by the stupid glitter.
A stable political system has to always lean towards the centre and rely on compromise but it also requires politicians with principles and balls of steels. In my opinion neither Romney's nor Obama's centrism would have been respectively have been and will be beneficial in any way.