BlenderPilot, accident rates can and are misleading at times depending on what data is used.
Linking accident rates to hours flown is one of the worst ways to view accident rate data when you consider that around 80% of all accidents happen during the takeoff and landing phases of flight.
Put the AW139 accidnet data in comparison to takeoffs and landings. Do the same with a commercial airliner. Yes, the helicopter will still be worse, but the airliner accident rate will have jumped closer.
If helicopters could do 12 hour legs with one takeoff and one landing, our accident rate would probably be pretty darn good too!