Racism isn't like in movies where it's a blanket hatred. Sometimes it can be but usually it's a scale even amongst non-whites. Take the Chinese, Japanese, and Koreans none of them would be too please if their daughters came home with a man who isn't a Chink, Jap, or Korean but they'd be a lot happier to see a white man vs a black man. So, when people are cool with interracial marriage it's not equal across the board.
As for the White Man's hatred for the White Woman that's IMO is hatred for the White Liberal Women the ones who like to separate themselves from White Men and act like we're the blame for all of society's ills and they're part of the "oppressed".
That's the problem with studies and polls the questions are usually too broad.