kman: My bench press has always lagged behind the other two powerlifts. I don't know whether it's due to me having relatively long arms or something else, but I'm still working on it. Some people are built better for the deadlift and not the bench press.
However, it was different in the December 2009 meet. I was still recovering from a lower back strain around two months earlier, as a result of doing deadlifts and atlas stones on back-to-back days. I was leaning back way too much, trying to load a stone. It's counter-intuitive because it only affected my bench press, not my squat or deadlift, in training and the meet.