You don't get loot per boss. So I don't know what wowhead is on about here. You do a tiny bit of each fight (always the same bit) and after three fight-sections you're done, Chromie ports you out and spawns a chest w your loot.
Hey, can You add to the guide, that there are also two event toys:Jar of Sunwarmed Sand bought for 1000 Timewarped BadgeandStormpike Insignia/Frostwolf Insignia bought in AV before match starts.