I always wondered about things like this happening. You would like to think that in the Panhellenic spirit, everyone involved in the bid matching process would do their best to be honest and fair, no matter if they were dealing with their own chaper or another one. And in no way am I trying to place blame on anyone here or assume that there are greeks out there who blantantly sabotage the rush results, but I think that sometimes there were just a few too many "mistakes" to assume that it's all just the luck of the draw. At least on my campus. Maybe it was because our chapter got quota far less often than other bigger chapters, but there were rumors floating around that we were getting screwed on this and that, and most of it was sour apples in the fact that we felt we were wronged on some various issue. Another problem was that we hardly ever had representation on Pan Council. The offices were voted on by all of the sororities and it turned into a huge popularity contest in which the same sororities dominated certain positions year after year. The positions should have rotated. I saw the rush process from all three sides: rushee, active on the floor, and Rho Chi. Every year got dirtier and dirtier. And, in saying all of this, I'm not trying to have sour apples myself. We had the computer system that matches all of the bids, and even with that bit of technology, nothing can prepare you for 1) the VP of Rush's laptop getting stolen with all of the bid info in it, or 2) having the laptop and the program crash and having to rebuild all of the information literally overnight to prepare for the next day's parties.
Info can get lost, girls can fall between the cracks, people can screw up unintentionally, and one person here and there can add their own personal twist to rush proceedings. That's the "fun" of rush *cough, snort*.
