It seems like no single judge can judge a single beer..perhaps individual masters should be involved at high level competition..
When I was a judges steward the judges would quite often ask a fellow judge to sample a beer if he wanted a second opinion. Brewcon does have 2 judges for each category/beer.
A few years back I entered 2 competitions a few weeks apart the first one, the London amature brewers, got a great review and although it did not place it did receive a commendation and was rated as a good example of is class. Two weeks later at one of the festivals the same beer got a terrible review. As any one who has attended these competitions would know once the judging is over us mere mortals can sample the entries and I always make a point of finding the bottle the judges sampled from, for my own QC purposes, and to my untrained pallet I could taste no difference in the two.