V.P. Dick Cheney: Gay marriage is a state issue that the federal government should not get involved in = horrible policy and enemy of the "good."
President Barak Obama: Gay marriage is a state issue that the federal government should not get involved in = hip hip hooray, the "first gay president" and this Newsweek cover.
Is this partly on Newsweek? Sure. Is there some leeway for other parts of what they probably believe (Cheney that homosexuals are probably bad people, though his daughter is a homosexual; Obama that it is perfectly acceptable), yes. But the policies and the way they want the issue treated is essentially the same.
If anything, I think Obama is cast in a worse light, since he was for gay marriage before he was against it and then in favor of it and supports federal intervention into such issues, whereas Cheney, as far as I know, has been consistent in his position and is generally in favor of state resolution of such issues. Obama essentially came over to Cheney's position and got praised for it, while Cheney was demonized. People love to talk about making politics more congenial, but its not only the demonizing that adds fuel to the fire. This type of deification for taking a non-position that is already the position of the opposition doesn't help.
So... its not so much that Obama is great and Cheney is the devil as it is that Obama is a Democrat and Cheney is a Republican. Got it.