It nicely lays out a number of questions/issues some people fail to consider at the outset and seems like a nice, lightweight tool for refining both your focus and your pitch.

That said, I'm not going to be a fan of anything that leads with "why you are different and worth buying." That's a very different question than the (un-asked) "why are you worth paying for?" Being bought should not be a startup's primary goal. Proof of value is in revenue.