Zoda, you are the man! I love your reviews of cards! I am nowhere near as detail obsessed as you! With that being said I will give my lame review of the card. lol.

Prior to level 6, I don't think this card is very good unless we are in the equalizer ruleset(equal health-(hope i got that right)).

Once he gets enrage I feel like this card becomes a lot stronger. So GOLD and above is the only time I would consider using Radiated Brute. Obviously since he is a melee guy, a good summoner to pair him with is Malric Inferno or Daria - But also in the "wild" league can pair him with Beetle Queen as well for the heal on the front tank with the additional attack(inspire)

That's my thought process behind the card. I am sure I missing a lot of stuff. But that's why I have you to give me the real breakdown of the card. lol.