Trump wiped out all the other Republican candidates in the primaries.
Hillary couldn't out talk Obama, in 2008, and this time she only had to beat Bernie Sanders, and anyone is smarter that he is, though she barely beat him. Also she had to beat Elizabeth Warren, who is like your crazy aunt Batty, who lives in the attic. Big deal.
Hillary has political experience, but lives in a bubble, outside of reality. Trump lives, deals, and prospers in the real world. He can relate to us who have to live in the real world too.