Our team consisted of a designer, a biomedical engineer (who didn't write a single line of code), a CS student (without a doubt the most "qualified" of all of us), and myself (a Political Science grad). I was the only non-engineering-educated person in the room. One essential lesson I have learned over and over in life is that it is futile to compete on a metric that you cannot possibly be the best at. Don't compete with your second best arsenal. You need to find the edge that nobody else will think of, or where nobody else can be. If the competition can outspend you, outmanoeuvre them. If the guy at the bar is better looking, be funnier. And if most of the guys in the room have PhDs in CS, go for hardware?
While all the hackers were writing machine learning algorithms and the sort, Andrei Pop and his team built "a glorified switch" that authenticated against Facebook.