Sultan - I'm guessing from your profile that you haven't actually flown any EOLs. How does that mean you know what you are talking about?
As John points out, TPs have to use an incremental approach to completing an EOL on an aircraft so you work up to it gradually rather than just hacking the engines and giving it a go - the aim is not to trash the very expensive aircraft whilst still proving it can complete an EOL with crew survivability.
Zero speed touchdown EOLs are easy peasy in a small, light helo, especially with a bit of wind to help but you will crunch a big helicopter trying to reproduce the same thing - that is why they go for a fast touchdown speed, letting the (generally large) undercarriage absorb some of the energy.
Folding tails are notorious for causing TR problems - the disconnect coupling needs to be rigorously serviced and positively engaged and checked before flight.