[niklinna]

I agree with hieronymous, it's the narrative import of the challenge that matters, not its objective measurements. This is a big part of what makes Spirit of the Century and other such games so appealing to me. Whiffing on a random challenge is no fun. However, if the challenge is there to offer an opportunity for deepening the story in different ways based on success or failure (or degree thereof), now we have something worth going at.

So ultimately the rating itself doesn't matter, to me. What matters is how the challenge affects the story!