Eh? The Hrothgar aren't carbon copies of the Ronso. They obviously draw some inspiration from them (insofar as they are people-cats and, with the right options, can emulate one pretty well) but the similarities end there. They have radically different societies based on what we know, and their physiques don't appear to be quite the same, with Hrothgar being more stockier than the athletic Ronso.

What I said was "... if... what they wanted to do was have the Hrothgar be carbon copies of the Ronso...", not that they were. There are some significant differences, and even if the Hrothgar on the First are called Ronso, that's no indication of anything other than them being called Ronso on the First. (Do the Dwarves greet everyone - or anyone - with a good ol' "Lali-ho!"?)

On the other hand... I can't see one thing different about the Viera other than the universe. Not one single thing. They have the same clans, hail from the same area of the same region, have the same social structure and culture... really, other than maybe being more forgiving toward those who leave the Golmore Jungle, I don't see any significant differences between them...