So, I want to know which enemy attacks first when I'm not sure of their stats. I'm in Aryth's Spire and I need to know which Aryth hits hardest (and therefore is the real one). Since their names are the same and I assume so are their stats, how can I tell who hits first?

The real aryth is also has the highest defence, so you could probably determine which is the real one (or have a good guess) by attacking each one in turn and determining which takes the lowest amount of damage (accounting for crits)?