I have found the Fenestron on the EC120 to be very effective, but obviously it uses a lot of power. A trait of Fenestrons in the hover/low speed regimes.
In one flying roll, I would swap during the day between an AS350 and the EC120. The difference in required peddle movement was extreme.
Many people falsely confuse the required peddle travel with ineffectiveness. And some don’t use the unfamiliarly large full travel when required.
As an aside: I have witnessed poor piloting technique result in over torque events. (Basically allowing a yaw to develop, often associated with sudden increase in power, then finally correcting with sufficient peddle and the associated increase in power demand.)