American Protestants have zero understanding of Eastern Orthodoxy.
Generalize much?
What understanding do you have?
Well, as a Catholic myself I can't say I personally have extensive understanding of all the workings of the church. However, I have some basic knowledge due to my pretty tough Catholic upbringing, coupled with the fact that my cousin is an ordained Protestant minister and he is very knowledgeable about such things, and we've talked about different faiths in the past.
I live pretty close to a Orthodox community and I have some basic knowledge of the church.