Buying mint.com was a hard and critical decision for Mint - they paid $2 million for it in equity during their series A. I think you massively underestimate it as a reason they won. I think if the names are flipped - if your company was named mint.com, theirs wesabe.com, then quite possibly you win. I did enjoy the article a lot though and thought it was very honest and good reading and insightful. But maybe you underestimate the power of their name and branding? Mint might be the best naturally-branded website of all time (edit: maybe ask.com is better, which also proves that branding and name isn't everything). But that was a big advantage.
I thought the rest of your post was very good and insightful and I agree with a lot of it, but I do think you underestimated the name effect. It's big, it has a multiplier on everything - more press, more PR, more virality, more trust, more conversion, more desirability, more user retention, etc, etc, etc, etc.