You are missing my point Failures Art.
Any system of ethics is a human invention. Humans evolved a brain that has the tendency to hold to a system of ethics-- but there are many very different systems of ethics that humans have invented and there is no way subjective to judge that one system of ethics is better then another.
Any system of ethics is completely subjective... it depends on your culture, and your experiences and a bit of your genes. There is no reason to think that an alien would have any of the same ideas about ethics; in fact it seems fantastically unlikely.
This is why I can call aliens who want to eat me -- "evil"... I am making a subjective judgement that is only valid from my point of view (which I can probably safely say encompasses people in any modern Western culture). However, I admit that this is a subjective judgment which makes it consistent with me imagining other points of view.
I am dubious about the implication of terms like "catching our ethics up" which imply that you think there is some progression of ethical systems (where one system is "better" or "more advanced" then another).
The order in this hypothetical progression is also quite subjective; it is questionably useful in discussions of our own culture for things we think are important, such as freedom, respect for life or human rights. But applying these ideals to non-human species is completely invalid.