Elixir luck bonus?

[csb]

At one time, the drop descriptions in mission icons showed a lot more detail. It even listed the white and green drops from bosses. If I remember correctly, the percent chance of the pink drop was given as 2.7%.

Regular: (100 / 2.7) = 37 boss kills per pink
15% luck: (100 / (2.7 * 1.15)) = 32 boss kills per pink
35% luck: (100 / (2.7 * 1.35)) = 27 boss kills per pink

This should apply to both bosses and ghosts.

I have read some posts where people say that they get a pink almost every time when using an elixir. That is either a lie, or the luck math is broken.