Seen a bunch of people asking for "which boss next," so here is the Official full list of bosses, Easy to Hard, based on the % of kills to the % of wipes from the global worldoflogs.com data. Notes: 1) this is 10man heroic mode. 2) Low # of attempts and elite guilds who have been farming for weeks makes a few of the %s scewed, protectors hardmode being the only one that is severely affected.
(25% means people kill them 1 out of 4 attempts on average.)
- Garalon - 35% (WoL does not record attempts that don't break carapace as Heroic)
- Amber Shaper Unsok - 28% (WoL is also buggy here, don't trust these two)
- Feng - 25%
- Stone Guard- 22%
- Garajal - 22%
- Protectors Hardmode - 21% (only 95 recorded kills)
- Elegon - 16%
- Wind Lord MelJarak - 13%
- Blade Lord Tayak - 11%
- Spirit Kings - 10%
- Will of the Emperor - 8%
- Imperial Vizier Zorlok - 6%
- Grand Empress ShekZeer - 5%
- Tsulong - 4.7%
- Lei Shi - 4.6%
- Sha of Fear - 4.1%
- Protectors Normal - 4.0%
Edit: So a lot of people are saying this is wrong without offering reasons why. The traditional approach is looking at the # of kills, or # of guilds that have killed boss XYZ. That is not ease of killing; if 1000 guilds attempt a boss that they can kill after 2 attempts, there will be 500 guilds that have killed it. If all 40,000 raiding guilds attempt a boss that you can kill after 50 wipes (a much more difficult encounter), then 800 guilds will have killed it. The harder boss will appear above the easier boss on a list of # of kills, and well-intentioned raid teams will waste time wiping. Also, please do not go solely off the above list. For your guild, consider whether group coordination, high dps, or awesome healing is your strong suit and use this list in conjunction with fight research to determine your "best approach." For the most part though, this list is has statistically significant data and can be trusted. Source