Well looking at how you are doing in your guild is not the right way to do it, you have to log at more logs. If you look at raid boots (that get their numbers from World of Logs this is what you get (using normal since there are almost no logs from heroic).
Don't take the numbers below as facts, they only give a hint of the state of each class.
10 man overal dps, top 100 from each class::
1. Rogue - 140.3K dps
2. Warlocks - 136.9K dps
3. Priests - 134.8K dps
4. Mages - 133.7K dps
5. Druid (caster) - 132.6K dps
6. DK - 128.3K dps
7. Hunter 126.1K dps
8. Warrior - 123.6K dps
9. Shaman (caster) - 121.6K dps
10. Paladin - 117.K dps
11. Monk - 112.5K dps
Source:
http://raidbots.com/dpsbot/Overall_D...00000000000000
25 man overal dps, top 100 from each class:
1. Priest - 150.8K dps
2. Rogue - 150.8K dps
3. DK - 145.9K dps
4. Warlock - 145.2K dps
5. Warrior - 144K dps
6. Druid (caster) - 143.6K dps
7. Hunter - 139.2K dps
8. Mage - 138.3K dps
9. Monk - 132.2K dps
10. Paladin - 132K dps
11. Shaman (caster) - 130.5K dps
Source:
http://raidbots.com/dpsbot/Overall_D...00100000000000
Simultation craft simulation for each class dps with full tier 15 bis heroic gear (single target fight):
1. Mage - 230.3K dps
2. Monk - 216.3K dps
3. Warlock - 209.2K dps
4. Shaman (melee) - 207K dps
5. Druid (melee) - 206.2K dps
6. Rogue - 205K dps
7. Warrior - 202.6K dps
8. Priest - 198.2K dps
9. Hunter - 190K dps
10. DK - 186.9K dps
11. Paladin - 171.9K dps
Source:
http://simulationcraft.org/520/Raid_T15H.html
Don't take the numbers above as facts, they only give a hint of the state of each class.