All things being equal, does google treat .us domains the same as the others, in terms of serp rank? Will the identical page - same backlinks, same pr, same site structure, same everything - fare any better or worse simply because it is a .us domain? This is purely hypothetical, I am just trying to decide if it's worth investing in a few - no other factors apply in the equation. I've gone through search and did not find any discussion on this specific issue.