Can you give me a single example of how Trump is "definitely more socially liberal" than Hillary?
He supports single payer healthcare, she does not. Although I will admit using the word definitely was a bit strong, since neither candidate is particularly forthcoming about their true intentions.
To my knowledge, Hillary is definitely more supportive of LGBT rights, civil rights, and pro-choice/pro-women policies than Trump. She's definitely more likely to pursue criminal justice reform. And she's definitely more likely to fight for gun control legislation.
I wouldn't say she's more likely to support criminal justice reform since she championed the mandatory minimums and drug war that caused the issues in the first place. I doubt either of them will do shit with gun control, Obama hasn't been able to convince Congress to do anything thus far. Hillary has only "supported" LGBT rights since 2013, so no one knows what she will actually do, and it's not like trump would have the power to reverse a supreme Court ruling.
I'll give you that Trump might be moderate on Planned Parenthood, though he's deceptively vague. But that sure doesn't make him "more socially liberal" than Clinton. I'll even give you that he's probably OK with gay marriage, even if he won't say it (most New York City-style Republicans are).
He is deceptively vague, but I am making the assumption that he is doing that not to alienate the evangelicals who currently support him.
And I'm open to him being on par with her fiscally (she's a corporatist, after all)...
But I have seen no evidence that he's more socially liberal than her. That's a fantasy, until I see evidence otherwise.
While he has definitely said some atrocious things about Mexicans, Muslims, etc. I'm about 60% convinced he's just doing it to appeal to voters, much like Clinton. Clinton just has a more moderate/left base of voters to appeal to.
Truth is we really won't know where trump stands at least until the general, but I have a feeling he will tone down the pandering and shift quite a bit.