BA also does this, the list was accessible by everyone but the pilots were identified by a number only that only each pilot knew. So you didn't know who was actually the top or bottom of the list, it was purely there to allow people to see where they ranked against the average. I did fly with one Captain quite often who would order 1kg less than flight plan fuel every sector knowing they he would be fuelled more than this. What is did though was register a 1% fuel saving against his number, he was very proud of the fact he was the most fuel efficient Captain. He was also the only Captain that I knew that actually had a full genuine fuel emergency when an 'unexpected' snow flurry effected LHR.