As far as we can establish no-one has ever had an engine failure in a twin whilst climbing upwards backwards in a 'Cat A' t/o, being exposed to t/r failures and other critical components for longer.
Well, I've had two engine malfunctions during Cat A departures. You didn't read about them because we handled them safely. After the last one the aircraft was recovered by crane then went home by road on a low loader.
Furthermore a twin profile does not have to result in an uncrashed helicopter merely a good chance of survival.
That depends on the actual class being operated. You sure you have flown a twin?