Tfor2: A "professional" helicopter pilot and a private pilot collided in publicly owned airspace. Let's just give the helicopter guys a voice here? I don't think so, Phil77. Let's hear from others on this subject.
I didn't say that. But obviously your are speculating on unverified reports - show me the report which states he overtook that Piper and then lets verify that before we jump to conclusions.
Secondly you are lecturing about aerodynamics you apparently know nothing about.
Nobody here has a problem explaining even the most basic principles of helicopter flight if being asked, but I suspect unfounded speculation on issues that have nothing to do with the accident at hand (i.e. downwash, vortex generation, settling with power) is not what your "other people" appreciate.
I rest my case, back on topic please.