Hi BALLSOUT,
I see from your profile that youŽre a 737 Capt. So no doubt you have more knowledge about this matter than most of us here on the CC forum.
Contamination is something we do get training in, in fact itŽs one of the spearpoints of this yearŽs SEP recurrent at my mob. We reviewed the Potomac accident already mentioned on this thread.
But even after having spent 5 years on the 737 in the past and regular training on contamination, I canŽt say IŽd be confident to make a definitive statement about wing contamination one way or anther.
See ice/snow on wing => alert pilots
If youŽd care to explain a bit more about why you believe this pic is a fake, IŽd be grateful.