You're the fools.

...Clearly 2 crystals does not depict the drop amount actually being increased!

But seriously though, it's just a slight reminder of how I hate how drops are handled in this game, especially in the open world. One thing to note that the text for additional loot explicitly states that mug was successful, and only on the screen of the person who used it. The other NIN in the group didn't see the text at least. You'd think at least with a skill like this, it'd generate a random loot from the table to go into my inventory. As a new class with possibly overpowered mechanics/rotations, all things in this world should belong to me.