The LA Times conducted a test that pitted a silpat against parchment paper in a holiday cookie bakeoff. (I'm not going to get into the fact that the article also states that "traditionally, careful home bakers have used clarified butter when greasing is required," though I have yet to meet a home baker who "traditionally" has done this.) They concluded that, while both parchment paper and silpats performed better than "untreated" pan in terms of spread and even cooking, the silpat performed better than the parchment paper in two out of three trials.
This is not a very fair test for the simple reason that the two things, although they share some of the same functionality, are designed to do different things. Would you compare a fork and a spoon, both useful utensils, and declare the fork to be superior because it is more proficient at stabbing food with its prongs?











