The CC role appears largely irrelevant thus far.
According to at least one passenger, an FA provided important info to passengers before the crash-landing. After the "BRACE" call from the flight deck, the passenger reported that an FA yelled out: "Put your head down, put your feet flat on the floor."
Professional work and clear thinking to supply that tremendously important info, and hardly irrelevant to the outcome.
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On another subject, I imagine that most would agree that a dead stick to an airfield, height and distance (at the time of engine-loss) permitting, carries less risk than a dead stick to a river. That said, one distinct advantage of the Hudson compared to Teterboro is the "runway" length: with the Hudson, you can set up for best/slowest glide, with no real worries about landing short or long.