Although I've never thrown a SB disc(I own 6 SB discs) They aren 't suposed to wear more than Champion.. It's like Having a champion disc with Super Tackiness... They do feel a little less stiff, but not soft like they will chip or knick. I"d expect them to hold up just as well as champion.
Can't wait for the SB Teebirds.. I want to pick up a bunch of them. I might even have to trade some of my 11x's just have some money for these babies