Why ease is The Donald's Trump card

Love or loathe Donald Trump, (I’m the latter), it’s worth scrutinising his techniques to investigate how he’s been successful.
While Hillary is eminently qualified to be president, Trump’s shtick is proving persuasive. A grammatical and vocab analysis of Trump’s speeches pegged them at 5th Grade High School complexity, and other candidates at 8th to 10th Grade. While many see Trump for what he is, people are swayed by simple language and ideas.
What Trump does well