This is so many under-geared players that just joined and cannot physically damage the boss without dying do not get counted, since they are not getting the bag, why bother adding them to the health pool? This also would multiply with DG boss scaling, as the health would be bossHealth * playersDamage
, bossHealth being the hp of the boss and playersDamage being the amount of unique players that damaged it. This would make it so bosses are easier to do in general, as also many people would be mining, exploring, building, all at one time.
It would count whoever summoned it + those who damaged it.
This is similar to another server, which I will not name (b/c it might be considered advertising), but I will show an example here soon.