Dexter looks better but Cutler is superior in thickness and calves.
That second picture you posted of Cutler you cannot even see his right side. It is in the shadows. How can you make a fair comparison when the guy is in the shadows? Look at his upper left lat. Completley in the dark.
Also the Mr Olympia has been decided from the back since Haney was winning Sandows. Dexter has great detail but he is to small to compete with Ronnie and Jay. I know that is not what bodybuilding is supposed to be about. But that is how it is these days.
Even in that picture Jay has better thickness and size. Not to mention his hams/quads/calves are bigger and more detailed.