The difference is that a BD microstopper is rated at 5kN, not 12kN...ie, you'd probably do something like put a screamer on it, or double it up, etc. recognizing that is "only rated at 5kN", whereas, if you had a nice camming unit rated at 12kN buried in clean granite, you wouldn't even think twice about it (when you should, if its a cch piece-of-shit with a "real" rating of 5kN)...
While i generally think choad is a choad, i think he's spot on about your comment...you can generate 1000lbs pretty easily in some cases....