Another way to look at your point is that once you get outside investment, "control" between the founders is irrelevant, so you should reward the founders up-front based on merit (as Shapiro's article suggests) instead of based on some soon-obsolete notion of who controls the company.
In real life, I would have no problem with your suggesting Shapiro's model for initial unequal equity split - so long as you wind up with the least shares. And that's the issue - it makes initial equity split more likely to be competitive or contentious when the stakes are likely to be very low or zero.
My point exactly, two people who don't even know each other find it easy to argue about unequal stake splitting. Actually, this is Joel's point. I merely recapitulate. :)
