Of course! In fact the power levels of the S92 and many other offshore helos are precisely what I think are right - Cat A from a rig but without the tremendous overkill that ends up sacrificing range and payload, as is the case with the AW139, where the 21000 lb helicopter is trapped in a 15000 lb certification.
The S92 carries 19 pax in ISA+10 zero wind, 50 foot dropdown to about 300 Nm with IFR reserves. As you seem to misunderstand bpaggi, there is too little power, the right amount of power and too much power. Yes, you can have too much power, just look at the payload range data to see what I mean.