Regardless of who we're supporting in the Democratic Primary, I think most of us can agree that this has been an extremely unique and interesting process, not just becaue we've been given two extremely competent candidates, but also because of the deep look at American society and the media that this campaign has exposed.
To me, one of the most interesting things is the by product between of having an African-American and a Woman running for president - an extended look at racism and sexism in our society.
To compare the two directly, I think that sexism is more widespread in our society (and is unfortunately considered acceptable in some circumstances), but racism continues to be a greater problem, partially because of the total lack of vocabulary to describe racism.