Not certain on the strength issue, but it seems there is, perhaps a cap. Because the dragon i was using at the time certainly has a higher rage than the primarily caster-oriented dragon. But the difference is only of 100 or so damage per hit, on average, with nearly a thousand points difference in strength. Also, re-checked the crit V stats. Mistakenly reported the listed % adjustment to be 500%, where it lists 300% with 120% adjustment for stance (which, i think, comes out to something akin to 360% aggregate modification). Either way, the average damage has been much closer to 200% than even 225%, and in some cases using high base-damage weapons, hardly distinguishable from normal strikes.