It's really a skill of power management when an engine failure occurs in a single-engined helicopter. Of course some machines have the edge (B206, B47 - providing you don't let high inertia blade rpm droop) but it doesn't mean lower inertia blades aren't manageable, for example, my CPL(H) flight school regularly trained autos down to 50' AGL in their singles (R22s among other types).
I keep reminding fellow helicopter pilots that engine failures are not a matter of "if" but a matter of "when". I have known many highly experienced pilots go through engine failures in their distinguished careers and the only common thread is the surprise and disbelief with the total denial "This isn't happening to me !".