over a month for the worlds best guild to complete the teir? sounds fair to me... look at a few facts
lei shen died 14 days after jinrok........ then 16 days later ra-den died
ragnoros died 20 days after shannox....
deathwing also died 20 days after morchok....
wil of emp died 2 days after stoneguards - kinda pathetic
empress died 10 days after imperial
sha of fear died 4 days after protectors - but thats to be expected when people were fully geared from previous raids.