Mid-2015 OSRS CWA Clan Ranking (based on RSC aftermath posts)

There's a lot of trolling in the "rank the top clans" thread, so I went through the last 6 months' RSC aftermath posts to try to rank the top CWA clans in a more rigorous manner.

This is NOT an overall ranking of the "best clans in oldschool" (ROT and AF aren't featured in this ranking because they don't do much CWA, but they're certainly top clans by most metrics). Instead, it is a brief summary of OSRS clans' year-to-date CWA records, with the top clans in this ranking generally having won the most fights against other good clans. (One inherent caveat is that not all clans post aftermath topics for all their CWA victories, so a clan's rank reflects both its CWA prowess and the consistency of its aftermath topic posting.)

Results

Main clans only (including country clans):

• Fools - 1375 rating - 18W 2L (90%)
  
• DF - 1281 rating - 18W 10L (64%)
  
• Vitality - 1244 rating - 17W 10L (63%)
  
• VR - 1207 rating - 6W 6L - (50%)
  
• DI - 1107 rating - 9W 17L (35%)
  
• Ronin - 1055 rating - 4W 17L (19%)

Including runepure clans and smaller teams (Imperium/TT)^:

• Fools - 1375 rating - 18W 2L (90%)
  
• Imperium - 1308 rating - 16W 5L (76%)
  
• DF - 1281 rating - 18W 10L (64%)
  
• Vitality - 1244 rating - 17W 10L (63%)
  
• Team Trinity - 1210 rating - 6W 6L (50%)
  
• VR - 1207 rating - 6W 6L (50%)
  
• Valhalla - 1196 rating - 18W 16L (53%)
  
• Empyrean - 1177 rating - 6W 8L (43%)
  
• DI - 1107 rating - 9W 17L (35%)
  
• Silver Bloods - 1104 rating - 3W 11L (21%)
  
• Anarchy - 1083 rating - 6W 15L (29%)
  
• Ronin - 1055 rating - 4W 17L (19%)

^ Some clans, including Team Trinity and Poison, have indicated they post a significant number of fights' aftermath topics exclusively on sites other than RSC; consequently, these clans' rankings (or lack thereof) are subject to more error than those of most other clans.

Methodology

• Fight results are from RSC aftermath threads started between Jan 1, 2015, and June 6, 2015
  
• CWA only - no wild fights
  
• No pures (many pure aftermaths are posted on other sites and not on RSC, preventing accurate ranking)
  
• No distinction between P2P and F2P fights (and other variations in rules): only the result is considered
  
• To be included in the ranking list, a clan must have been featured in at least 10 RSC CWA aftermath topics since Jan 1, 2015.
  
• Ratings are computed using the Elo algorithm, similar to those in League of Legends and professional chess. Beating someone with much higher rank gains you a lot of rating and loses them a lot. Clans' ratings were set to 1200 on Jan 1, 2015, and updated sequentially in order of RSC aftermath thread start date.

Raw data available upon request