Reflective equilibrium

I am human, nothing human is alien to me

Reflective equilibrium refers to your moral beliefs if you have all the relevant information, are approaching the issue calmly and rationally, have as much time as you need to think about it, and have made sure that all of your beliefs make up a consistent and coherent whole.

The question that remains is will people come to agree with each other at reflective equilibrium if we knew everything and approached the issue of ethics with complete rationality and a fully open mind? I personally suspect they would not, if not, what does that say about humanity?