Just browsing the posts from way back and telling some of my guildies about this, we seem to have hit every nerf that was very early on in the games cycle ( 4.0.3a to 4.1) and avoided all of the post 4.1 nerfs, the fights in 4.2 seem to have gotten completely murdered but we have not seen a singular patch note from 4.2 that is accurate to how its working on beta.
TLDR: the original person who found out the bosses were nerfed misunderstood how many nerfs t11 took as it went on prio to 4.1 and “post nerf” bosses which we don’t have just became = 4.2 nerfs
Its unclear if Blizzard even know that the community think they are getting 4.2 bosses while they are definitely getting 4.1 bosses