Yeah, there are some other bonuses for Garou in Crinos that aren't usually listed. Your claws and teeth do aggravated damage, your difficulty for hitting and biting goes down (easier to attack), your perception for scent and hearing goes up slightly (but not as high as lupus,) you can soak aggravated damage, and you heal a level of bashing or Lethal a round (I forget if that's automatic or if you have to roll for it, but you can also instantly heal one level of agg per day with a rage roll, but that risks Frenzy.)

You stay in Crinos for as long as you have Rage, and Crinos does not cost anything to maintain. Rage is just used to fuel gifts or for extra actions while in Crinos.

So the reason that werewolves are considered so dangerous (compared to Vampires) is that, at character creation, a werewolf essentially has Potence 5, Fortitude 3, Celerity x (depends on your Rage amount) Protean 3 or 4, and Auspex 1. BEFORE you account for Gifts. And they travel in groups. And if they have a pack totem they have additional stat bonuses and get to coordinate their attacks in a way that no other supernatural can.