I hope no one is thinking that I would ever attempt such a thing.
That said, while it is easy to understand why actual IMC is more dangerous then being under the hood, why is it more difficult? Serious question, as I've never, and don't desire to, operate a helicopter in actual IMC, so I can't and shouldn't find out for myself. Are you saying it's more difficult for an unpracticed, unrated pilot with inadvertent (or intentionally stupid) entry into IMC? Obviously that's the case. However, what about someone who is appropriately rated and current? One would think there would be little difference between real and simulated in the latter situation.