You died and he grabbed your tag, its not like you gona find your box back if its on the train. Better if your teammate gets the loot then the enemy, it can improve your chances to get a positive score.
in general i don’t loot my teammates, but in case my silly teammate get himself killed by a train or falls off a cliff (don’t get me wrong, it happened to me too) leaving me in a disadvantage when i have to carry his banner around trying to survive 2v3 or 1v3 i sure as hell take at least the advantage of gold armor (much rather than leaving it there for my opponents)
