The degree from such a college itself cannot offer you much over anyone else...but...It's ALL politics. Those that go to such schools probably run into more pilots, have more pilot-friends, and thus, have more of those coveted connections to the industry.
Also...many of these schools have internships and bridge programs that FBO's cannot offer. Interns are building valuable firsthand experience in the industry, and again are building crucial connections with chief pilots, directors of operations, etc. that are getting to witness their work ethic, knowledge, and personality firsthand. In most cases, this leads to preferential hiring.
Some schools just have connections in the right places, too. Horizon, along with several other regionals (I think) has been traveling to UND to interview lately. That's a pretty amazing deal.