That's a very broad brush you are painting with. I don't know of any non RCC that believes it is a parable.
If NO Protestants believe that Matthew 25:31-46 is a parable, then why does “Parable of sheep and goats” yield so many search results?
http://search.yahoo.com/search;_ylt=A0geu8.5ZKlI1DwAuztXNyoA?p=parable+of+sheep+and+goats&fr=yfp-t-501-s&ei=UTF-8
Additionally, if NO Protestants believe that Matthew 25:31-46 is a parable then why are faith AND works dismissed?