Paul Farquhar
Legend
Depending on how the DM plays it, enemies may be more likely to target the guy without a shirt than the guy in full plate.Some barbarians need to be hit in at the earliest possibility in a combat, or they need to be hit from time to time, one good thing about barb which 5e does right is that they do not rely so much on AC, but also on HP and DR
And if you show some imagination and choose a race with a dex bonus (e.g. non-v human, wildhunt shifter) then unarmoured defense is more competitive.
Indeed, Dex-barbarians are good all round, telling us that the damage bonus from rage aint worth much.