There are simply more guys than girls here. It is what it is. To be blunt, it's largely a tech school. There are a lot of relatively unkempt guys walking around in big hooded sweatshirts and baggy cargo pants or jeans, but this look also attests to the work ethic of Drexel students. However, that's more stereotypical of the University as a tech school. Guys that major in business and arts/sciences (even health, occasionally) will have a bit more style than average and generally a more "put-together" aesthetic. With the ratio of guys to girls, as well as the variety of majors at Drexel, the attractive girls are spread over curricula. This differs from guys, who are mostly split between "geeky" in computer science and engineering and "smooth" in arts/social science programs. "Bros" are kept to a minimum, as well. Drexel is a serious melting pot—students can find anything here.
It boils down to this: Drexel girls think the guys are geeks, and Drexel guys think the girls are stuck-up. Oddly enough, both occasionally turn to Penn for romance, and most of the time, it works out, and everyone's happy.