Lets not forget that I also believe the triggers on the BSA Superstar are better feeling than the HW's (now you know I'm on something
), they just seemed to have a more crisper break, I think it might actually be the trigger blade's themselves, the BSA's seems broader and the AA's is a bit more set back and just seems to feel better, may be it's the finger positioning which does it for me, it doesn't always have to be mechanically better to feel an improvement, it may be the same sort of thing when people fit a set back trigger on a HW, it's the same mechanism but it's just nicer to use, an improvement so to speak.
Pete