Oh, I thought it was 10 best scores.....
Looking at other team's scores, I see this:
21. -1 -2 6.85 sec EXTREME Overclocking 18 members
22. -1 -4 6.87 sec 411 Overkill 19 members
33. +12 8.11 sec Overclockers UK (OcUK) 14 members
42. +1 +2 8.98 sec OverclockZone-Thailand 19 members
43. +3 9.03 sec OcTeamDenmark 13 members
49. -1 10.85 sec ASUS Independent 14 members
50. +1 11.15 sec SweClockers.com 19 members
51. -1 +648 11.23 sec Team South Africa 11 members
52. -3 11.33 sec Techsweden.org 15 members
53. -3 11.62 sec Guru3D 15 members
54. -3 11.94 sec pc-overware.be 13 members
58. -4 14.47 sec Lowyat's Overclockers 16 members
59. -3 15.23 sec L-B-H Extreme Team 16 members
60. 15.69 sec Overclockers NZ 14 members
This seems to suggest that it's 10 scores, not 20. I believe other benchmarks are 10 as well (we are reasonably ranked in all others except wPrime 32M).
Thanks,
~ether