Well, anyway you look at it thats a load of horse-sh|t. You did what the assignment asked, you did it within guidelines he gave you. Man, I'd be bustin caps if that happened to me. What if you had of typed it and one of the students got his professionally printed on gold-leaf? Would it then be graded comparitively? You did what you were asked, and you did it well. Nah, thats crap.
And who the hell here called that ethical!