Funny. I have a similar experience with the ranger.
And I have a similar experience with the rogue. Throwing a fistful of d6s feels good.
I've played a 1st level Barbarian in one playtest so far, and he played really well. He dealt more damage than anyone else, but he was the party's only striker. He wasn't knocking people over in one hit, but with some good rolls, he could bloody people. His damage seemed on par with a brutal scoundrel rogue. Maybe a little less, but he wasn't so reliant on positioning for sneak attack bonus damage to hit the high numbers. In fact, he played a lot like a melee rogue, with pressing strike serving as a MUCH better deft strike. (This is to say that I played him like a melee rogue, and he seemed to play well that way.) If flanking is possible, pressing strike will give it to you every single round, which also helps whichever melee fellow you're working with.
Like a melee rogue, you also need to look after your health. The DM started throwing things at him pretty quickly, because he makes a tempting target in the thick of it. He got bloodied in two out of three encounters I played him in. Between the party's pally and the cleric, though, he was never in any real danger of going down. Also, I probably could have played him a little more conservatively, or started him with some heavier armor in my build. One time, in particular, he went from more than full to bloodied in one round due to a somewhat reckless use of Avalanche Strike. He stayed on his feet, though.
Balance seems good at first level, but I'm curious to see how some of the higher level rages play out (e.g., Thunder Hawk, Stone Bear).