They totally drove the fact home that neither were copies and both were the originals. Ask either of them and they'd tell you the other was the copy... but that's just because even they
couldn't wrap their heads around what happened any better than any of us could.
In other words, up until the point of the split, they were exactly the same person. Every moment thereafter they became individuals with all the baggage that comes along with that fact. Including the "controvery" Ar-Pharazon talks about in his spoiler and the way Aeryn and everyone else feels about them.