I agree that the cranks should spin freely without the chain on, which is why I suggested testing them that way. I'm not sure that the number of turns they spin is a good test, unless you know how they spun previously. Seal drag and/or parasitic drag from a heavy grease can make BBs feel a bit stiff, but if it spins smoothly and quietly it's probably OK, even if there's a bit of drag.

As for the freehub, I agree that a sticky one needs lube. There should be as closes to zero froward drag as possible on a cassette when the wheel spins. My reference to holding off and checking for debris first, is because that's a common problem, and finding it sooner rather than later can save you unneeded labor. If there's no external cause for friction, it needs service.