Turnout in 2014 was even lower than it was in 2010, and that was everywhere - I don't really think you can infer a broad conclusion from that. Turnout was lower in Pennsylvania than it was in 2010, does that mean Tom Wolf was a bad candidate compared to Dan Onorato?
Explain how. You said Cuomo was such a disaster you wouldn't be surprised if New York flipped red. Maybe you wouldn't be surprised but I'm pretty sure everyone else who pays attention to politics would be.
As much as I'd love to blame the politicians/parties for this one, it's not all on them. The GOP has a vested interest in keeping turnout low, sure, but the Democrats went balls out in 2014 to try and amp up turnout and turnout actually dropped compare to previous midterms. There's such a strong apathy towards everything but the presidential elections and the parties shouldn't be holding voters' hands to the voting booths. People should care - the fact that they sit out elections in which their mayors, governors, etc. are elected (who will have a far more direct effect on issues affecting their personal lives than the president) because they don't know what the difference between a Senator and a Congressman is is inexcusable.
Agreed 1000%