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Seb-wejem
Well it sounded from your earlier posts that you didn't think this was the case by saying they get almost no benefit from strength. They may not be peak, but with rage they can definitely gain more mileage out of their strength score than a similarly scored fighter could get. This might be where the arguement for peak is coming.Saying that barbarian is a Str based class is kinda like saying rain is wet. Of course it is. My issue is with the idea that barbarians are somehow the "peak of human strength". There are other Str based classes in the game. And you can certainly play a 16 Str barbarian every effectively. Heck, even a 14 Str Barbarian works.
I agree that a 14 works. Any class works with a 14, less than a +2 bonus to your main stat and I think you're going to have a bad time.