Due to hacks. cheats and exploits these numbers are meaningless...it's kind of like the steroid era in baseball.
Yeah well, it should go without saying that the system is always changing. What may be possible today may not be tomorrow and yesterday's records may be anomalies of circumstance which cannot be reproduced today, so on and so forth but c'est la vie. To keep a records thread truly honest it should be reset on occasion (probably every major patch, 2.1, 2.2, etc). Without that, these are just for entertainment purposes only and shouldn't be taken too seriously.