The first thing I think of is motivation...
...what would be the motivation to give someone a het, and present it as het, if it weren't het; meaning, I could see profit motive being a reason to pass off a normal for a het, because there are elements out there that try that stuff.
But, if I had no motive to deceive, and I was giving someone a het as "a gift", I would have no reason to lie about it.
Make sense?
BrandonsBalls