Nifft, the three claw attacks are due to haste, if I read correctly.
[edit: I read the OP correctly, but I didn't, apparently, finish reading Nifft's paragraph. My bad]
I wouldn't worry too much about it: you're looking at the very rare occasion in which the druid makes two critical hits. Had the fighter made two crits, he may have seen similar damage.
Let's say the fighter is wielding a +2 greataxe and has a strength of 18, and specializes in greataxe. That's 3d12+30 points of damage on a critical hit; your average damage for such a hit will be 49 points.
Note also that:
-Your fighter will almost certainly have a better AC than the bear;
-Your fighter will almost certainly have better HP (assuming you side with the "hit points don't change" viewpoint -- an absolute necessity if you're finding druids overpowered) than the druid
-Your fighter can use ranged weapons
-Your fighter can, and this is pretty important if enforced, communicate with the rest of the party
-Your fighter can drink potions (such as cure serious wounds
)
-Your fighter can use weapons with high critical ranges.
The druid can be nasty in combat, but they require more bffing than just a wildhsape. As a druid player, I wouldn't dream of going into melee without a mage armor and/or a barkskin cast on me first. To do otherwise would be begging to be cut down like a dog.
Daniel