As far as I could tell desmo, Cirrus simply tested that the chute would get the aircraft down safely following a spin, and to make life easy put that in the flight manual as the spin recovery. From my experience with the aircraft I would certainly attempt a normal spin recovery before blowing the chute (time/alt permitting) and to be honest I would expect higher than 50% chance of the aircraft recovering (no science, just a guess, it's much nicer in the stall than a lot of other spin approved aircraft)
While it may be true to an extent, I believe that the BRS is to help sell a new single engine aircraft to people who might be considering the safety of a twin vs single, so they can say "you don't have any risk of losing control if the engine blows compared to a twin, and even if you're over tiger county and it happens, you can just pop the parachute and it'll drop in nice and easy"