Some Higher Progression Mobility Seems Easier Than Lower Progression

For example, the FL/PE2<iM (table) has a mastery of 30 seconds. FL/PE3<iM (table rocks) has a mastery of 5r. 

 

The 30s hold is more difficult than the 5 reps but it's a lower progression. 

 

I think there were a couple other places I noticed this, but I can't remember them off hand. 

This probably means you have holes in your physical preparation. I don't believe the iM is intended to be a step-by-step progression to som end goal.