You forgot to mention his friend getting into a final's club and he didn't.

The whole movie really did make it out as a revenge move. Which I think is bullcrap. The Winklevoss might have had the idea first but zuckerberg probably saw it more as, I'm going to make it happen and they can't why should they get any of this.(Pure speculation) Not saying it's right but it's not like he was doing it to screw them.