I honestly don't think people on this server care about "firsts" for raid kills. As far as I know EI got two server firsts in 16-TFB HM but I don't even know if that's true because there could be some guild that did it before us and didn't bother posting in this thread. And clearly we don't care because we're not altering our raid schedule to get extra days in to beat someone to a kill.
I might go a step further and say the vast majority of people playing SWTOR don't know or care who the top guilds are in progression raids and that the people who do care about that are leveling pandas right now.
i think your comment is OFF topic in a server thread callr <Official server progression thread>, if u dont care, u dont read this lol, and if theres people that killed the boss befoer everyone, and didnt post it here or somewhere in the forums, simply it never happened and no one will know lol.