Berserker Risk replaces 1 Non Wind job with a Berserker at random so the percentage chance is all kinds of fucked up without knowing which one it replaces.
For example, normally your chance of getting a berserker goes down as more jobs are added. Earth Crystal has 20 jobs to choose from, so you're at 1/20 there while you have a 1/11 shot at getting a Berserker with your Water Crystal pick and a 1/16 shot of getting one with your Fire Crystal.
For example, normally your chance of getting a berserker goes down as more jobs are added. Earth Crystal has 20 jobs to choose from, so you're at 1/20 there while you have a 1/11 shot at getting a Berserker with your Water Crystal pick and a 1/16 shot of getting one with your Fire Crystal.