POH
Ok, ATC. Let's stick with feelings and "rumors", and ignore science. Got it. Just chuck out that POH. Wait, the POH says one should get about 600fpm climb on one engine even at max weight. The POH does not address un-feathered bad engine, as far as I can see, but I found pilot reports that not feathering the bad engine was only marginally worse. As my first post said, I hope this is "just" a tragic accident, but I don't let emotions get in the way of wanting to know WHY innocent people on the ground died.