I need CG to chime in on this. I understand how it functions. What you just described is different than every other node in the game. I get that it has been this way, but something is wrong. If I go and do a battle and it shows 2 shards for a character as a possible reward, I will never get just one. Never. In the same way, If it is single drop, you will never get two for a single battle. This is because the rewards per battle are declared right there by the node. The probability is based on whether you get the reward or not per roll. Again, if the reward is 2, then we should get 2. If the reward is 1 or 2, then it should show both in the rewards section. Otherwise it is ambiguous what the reward even is.
To say "it shows the max that you can get". I guess I need an example from another node to make that point. I have seen ranges posted for rewards ex:2-4 zetas for the dathomir event. And the reward isn't 1 zeta. It is somewhere between 2 and 4. That makes sense and aligns to the other nodes.