You said "If [Trump] wins the election it will mean that America stands for what he stands for."  There is a certain portion of voters -- I hope a small minority -- for whom that is true.  There are many more voters who disagree with much of what he stands for but will still vote for him because they've come to hate Clinton with irrational zest (flaws, yes, but several orders of magnitude less than what most Republicans (and even non-Republicans) believe because of the relentless attack she's been under, all because Republicans have known since she was FLOTUS that she would be a legitimate contender for the White House). They've utterly convinced themselves and many others, through the sheer volume of vitriolic rhetoric, that she's Satan.  [I think it's easy for them to go there because there is enough carelessness on her part to open that door a crack, and of course they exploit that doubt to the nth degree.]  Anyway, there are also many voters who don't agree with him who will vote for him anyway for personal financial reasons, for political and SCOTUS reasons, and even just anti-Establishment motivations.  And there are those voters who will vote for Clinton.

So in a very real sense, equating what he stands for (as evidenced by his actions and frequent unscripted blathering, not the teleprompter-Trump) to America at large is false.  And in another real sense, as the President, he would be the face of America to the world, and would indeed represent what America stands for to many here and abroad.

And with all that said, I don't think I contradict you.  Niels Bohr said "The opposite of a fact is falsehood, but the opposite of one profound truth may very well be another profound truth."