Using RIM and EmPower and Rowsandall to compare oars

I recently bought a pair of Concept2 Smoothie2, vortex edge, skinny, soft shaft sculling oars.  Previously I had been rowing with a pair of Fat2, vortex edge, ultralight medium shaft oars. I am currently training for a longer distance event, and there is a reasonably intense workout type that comes up twice per week.  As…