Yep, kinetics in isolation is as blunt as kinematics in isolation- tells us little. So is the medial shift in plantar pressure a good thing since it is creating increased supination moment about the STJ (if this medial shift in pressure was occurring in association with a foot orthosis, I'm sure some people would be arguing that this was a good thing) or is it a bad thing because they are pronating more? Pronation bad, supination good. It's naive at best. For "predictors" read things that are correlated, we all know correlation isn't the same as causation and the list of pathologies associated with "excessive rearfoot eversion" via science rather than anecdote you can count on a couple or three fingers.