BW did a great job on the DG fight ,and i sure BW test it
The problem is, it looks good on paper and on internal testing, the other thing is on live server.
All know that some specs are not in par with others
Just look the shadow tank
Internal testing show they are at the same level than other tanks but in reality, they are not, the same happen to dps and healers.
If they have a hard time to balance the classes, the only option is to "balance" the Ops