You're either missing the point, or you're trying hard to play dumb.
Obama was able to make Democrats vote in large scale. Clinton was not. It isn't that Obama voters suddenly decided to vote for Trump, but instead many of them didn't vote at all (or became smartarses and voted Stein which is the same thing anyway), while Trump was able to make Republicans vote in massive numbers. In fact, Trump got in Ohio only 180k votes more than Romney (which is to be expected considering that the population of US is increasing), but Hillary got 430k votes less than Obama.