That's the whole point. Her negatives need to be higher than his. He is the only candidate who can do that. The others cannot especially Rubio. Cruz is an unknown, maybe, maybe not.
But Trump will hang Hillary's albatrosses around her neck and in her mouth by November.
With his big mouth, Donald Trump has so caricatured himself as a misogynist that every time Trump attempts to "hang Hillary's albatrosses" around her neck he will succeed only in increasing his own negatives as an ungracious woman hater. Trump will play directly into Hillary's hands who has as her main claim to the White House the fact that she will be the first woman president.
No one is in a worse position to increase Hillary's negatives than Donald Trump despite his kerfuffle with Bill over extramarital affairs. That worked well in a Republican primary but will not work against 53% of the electorate who are women in the general election and who already entertain a profoundly negative image of Donald Trump
The gap for Donald Trump is just to big to close with wishful thinking on the part of his supporters.