User blog comment:Oknight/Superboy and Superman/@comment-1747822-20110314055727/@comment-167456-20110328104325

I think that's a slightly circular argument. Superboy should only be treated like Superman's son if he has been treated as Superman's son. Maybe the point here is that Superman should adopt him.

Also, since it's just occurred to me, clone and twin brother aren't synonymous. Not all twins are genetically identical, and the concept of twin specifically implies birth on the same day. So identical twin brothers are where 'brothers' and 'clones' overlap, but I believe that not all clones should be treated that as twins, just as not all brothers are treated that way.