my opinion is based exactly on that assumption. I can't think of any major difference between a rampaging werewolf and a rampaging werebear.
There's not a major difference between an axe and a sword, but it'd be a terrible decision to remove one or the other.
First thing I would add (though this is to werewolves) is make them more suited to sneaking. Wolves don't really rampage. They sneak up on their prey, inching closer and closer until their within striking distance. They're already pretty much built for agile combat to begin with, so making them more suited to stealth would be a smart move.
Werebears on the other hand, should rampage. They should be able to knock down opponents when they sprint, they should have massive amounts of health, and they should be slower, more lumbering beastforms.