Why is the email a mistake but the statement not one?
The statement at the meeting might well have been a mistake, BeachClub2014 made a good argument for this, too.
It's still surprising for two reasons: one, they must have expected the question, so why freestyle the answer? two, if a manager accidentally causes a lot of confusion (and there have been articles written about it, guides must have gotten hundreds of questions), the expected reaction would be to release a statement, that Chang's answer was misinterpreted and she only wanted to say that the Poly2 tower stands next to the Poly resort.

Still, a mistake seems most likely.