How is sand/oil roll winners determined in Syrcus Tower?

[Eidolon]

MMOs would be the an interesting case study for this.
"I didn\\'t get this thing with a 20% drop rate in 50 runs (which turns out to be less than 20) therefore it\\'s broken!"

I hope you meant 20 runs, and not 'less than 20%' xD I was a little confused by the post until I thought you probably meant they were overrexaggerating how many runs they had.

Even still, 0/20 on 20% sucks. In a perfect world they'd be 4/20.