Well I think we reached a dead-end and my conclusion is:
# By analyzing our morality systems we're able to spot just one dilemma (human embryos in scientific research).
# And the bases of our morality systems are different. What you defined as absolute vs objective (which I disagree) and I define as Catholic vs atheist.
You say embryonic research can bring a lot of good. But China is doing this kind of research since it was possible because they don't have this moral dilemma. I don't know nothing about what China discovered in this specific research, do you know about some panacea invented based on this research?
Also I repeat you have a very Sola Scriptura influence in your atheism.
And your position about "there's no absolute(s) in the universe" is a contradiction by itself.
The reason of why our morality seems to be very similar is because I believe everyone has a soul created with absolute moral commands. Even if you deny the existence of the Law-giver you can't deny the law written inside you.