Seems to me Sikorsky got caught on the hind leg with this one. Too little, too late. They only seemed to get going with this D model once they had lost the military Commanche project (the latter being a terrible loss for the industry, imho).
Unless they can get the MAUM increased, they will always be behind the pack leader.
Rather than a "D" model, on paper it appears to be more of a "C-" !