creweite
That is interesting and completely contrary to formal tests done in the UK!
I ran a series of tests for the LAA on various collision avoidance / traffic detection systems relevant to Light GA. As part of this I was given permission to emit ADS-B and it was received by a system called PowerFlarm. The tests showed 100% accuracy up to 20 miles - the limit of the test - (as best we could measure). It was so good that if I "broke right" out of visual range, the other aircraft could tell me what I was doing close it instantaneously. From a traffic detection POV it won hands down, with FLARM beating it for short range avoiding action on the collision avoidance side.
Rod1