Rather than suggesting an answer, keep watching and collect evidence, which could cut either way.
Is mainstream media ignoring and bad-mothing both, but venting more bile against Bernie? That is not a snapshot question but a pattern divination exercise running from now to the 2020 general election date. Cut the examination for now, from now to the primaries.
Warren is a formidable candidate, and if she ends up the first woman president, it would be better than that recognition going to any other female politician I know of.
LINK.
Also, we have not had a female vice president, unless you count Mike Pence.