The discussion seems to be mostly a matter of perception vs reality, marketing, price and weight. To me, if the manufacturer says it is pro, then it is pro. Why - because they made the camera and the only opinion that truly matters is theirs.
I totally disagree. In my eyes, the only opinion that truly matters is the opinion of the actual user. If the gear suit my usage, it doesn't matter at all what the manufacturer says it is made for. It is also totally worthless if the manufacturer is saying it is made for me, if it doesn't works for me.