Ok now, it let's say I get this sympathetic pity and concern for the sufferings or misfortune of others by watching an event on television and you get it by volunteering at a hospital. Compassion being nothing more than a defined set of chemical reactions, this means my compassion and yours are...
This could also just be an anthropomorphic attribute that is only the result of a long string of causes and effects. If true then any action, compassionate or uncompassioate, is nothing more than the inevitable result what came before.
Should both have the same source, it would seem that the Budda nature would also come from a higher dimension, perhaps different from the source of dualities, ie. virtue/unvirtue.
Yes, language is tricky. It seems that Plato was saying that evil is just a distortion of good. This would mean that at their source they are both the same.