OK, I read the other thread, not sure whether to respond here or there.
Point one -- Inhofe was voting for the gay marriage ban. Obama was voting against.
Point two -- Obama was saying some pretty standard things about what marriage means within his religion. Someone saying that they are "proud" that there are no gay people in his family is saying something more specific, and, IMO, more objectionable.
I take McG's point about context as a general concept. I'm a great fan of context. Even in terms of battling out-of-context quotes, though, there seems to be a significant difference between these two quotes. I have a feeling that the discussion of whether they are in fact significantly different will go nowhere fast -- or nowhere slowly and at great length
-- so I'll leave it at that, I think.