This is good advice not just for how to pitch a startup but also for how to pitch anything - say, a project within a company, or even yourself for a job. Obviously the market size would be more about quantifying the potential return on whatever it is you're pitching. And the one about the founding team might be more about focusing on just the most relevant factors for why the people involved are well-suited for the task. But overall these are great recomendations for making compelling pitches for any business decision.