The boss reward is decided by total group damage, not individual damage.
The final damage is calculated by adding up the damage of all players in the same group.
The group with the highest total damage will receive the boss drop.
Example:
Player A (solo) deals 2,658,247 damage
Player B deals 2,425,381 damage
Player C deals 845,901 damage
Player B and Player C are in the same group.
Total group damage (B + C): 3,271,282
Since the combined damage of Player B and Player C is higher than Player A solo damage, Player B and Player C group wins and receives the boss drop.
This system encourages teamplay, giving all players an equal chance to win the boss by working together rather than relying only on solo damage.