BoED: How are Ravages different from Poisons?

[Silveras]

No different in my mind than the Paladins Holy Smite ability which only hurts evil and I bet would really hurt much worse than a normal wound.

I don't object to having something that, by its mechanics, only affects Evil.

I *do* object to the hypocrisy of "Good can't use poisons. But, here are ravages. They're not poisons, because they only affect Evil creatures, even though otherwise they are harmful substances that produce debilitating effects, just like poisons."