I was under the impression from talking to a lot of pilots, as well as seeing what my wife who is a 73 line holder makes, that a line holder, on the 73 at least, (I assume the Airbus is the same) that doesn't mind working 90+ hours will make significantly more than a 756 FO on reserve when calculated at the same year pay. I was also told most 756 trips don't exceed the the min day credit. I don't think reserve 756 guys break guarantee very often do they?