I don't mean to burst any bubbles but we had 16(m) HM Bonethrasher down on 1/13, followed up with a 5/5 HM 16(m) KP clear on the 19th, there's no point in claiming world firsts in this game when no one knows what anyone else is doing. Just saying.
Congrats if that's true it was a tightly tuned fight. However after browsing through your website, the only screenshot referencing hard mode BT is the lockout screenshot which does not indicate 16 man. There are no loot screenshots, kill screenshots, or a kill video. Not saying you guys are lying, but I would recommend documenting it properly in the future.