noooby,
It sounds like we agree! I think Cat A is very important, it is the extreme OEI capability that I question, in that the range reduction is a steep price to pay for the vast power.
FLI,
there is a big difference between "full Cat A" and the 139. The S-92 is full Cat A from a rig with full pax and fuel for about 300 NM with reserves. The 139 has to start offloading pax by 160 NM (I think - do you have better data?) That is the price it pays for the extreme power it has.