Corruption, demeanor, and leadership.
She doesn't have dozens of lawsuits, she's not a loose cannon who will say anything at any moment (I can only imagine how awful Trump is in meetings with foreign leaders, and his lawyers don't even let him speak in court because he'll get himself in even more trouble), and she can get people around her to believe in things more than her own selfish means.
I get that you wanted policies, but things like this are important too. Haley wouldn't be headlining every day with some dumb shit she said on Twitter.
I feel oddly like I'm defending Haley... I'm not. Her border policies suck, she'll seek to pardon Trump if elected, and I don't see her doing shit on gun control either. Economically she'll do the same as Republicans in that she'll grossly underfund programs and then use their underfunding as justification for closing them, and do nothing to help the average person with tax breaks (those are for companies and upper class only).
I hear you in terms of her policies being shit, but calling the worst President in our lifetime the same as a below-average Republican candidate is just equivocating and makes people less likely to hear what you have to say. There's a lot of Republicans who are sick of Trump and do believe he's a threat to Democracy, but when they hear that people think Haley and Trump are the same, it reinforces Trumps worst messages.