Honestly... if anyone did any research they would know what they have. Most people go off of what a hatchery told them or the person that sold the eggs, chicks, or birds.
That's usually why I always, always ask for pictures of the birds. I have specific breeds in mind and I want those breeds only, not what someone is either knowingly or unknowingly trying to pawn off on people as something it's not.
It's like telling someone, sorry that's not a cucko marans, it's a barred rock. Or that's not a dominique, it's a barred rock. That's not a RIR, it's a production red or ISA red. They get mad because they don't want to believe they are in the wrong with what they've believed all along.
I have easter eggers that are muffed and bearded, pea combed, they have slate colored legs, and lay green eggs. Their coloring does not fall under the breed standard for Ameraucanas (It's on the ameraucana website if anyone wants to look:
http://www.ameraucana.org/ ) and I would never in my right mind try to advertise them as such. I've researched them because I used to not know the difference, or that there even was one (or two, or three).