One minor caveat there Jugg.  YJ Superboy was cloned half from Superman, and the other half was from Lex Luthor.  He had nothing to do with Lex true, but since kryptonian DNA is so hard to handle on a good day, a fact I think Superman knew about, call me weird that way, that probably didn't help his surprise since he might have suspected who the donor might have been.  But again I agree with most of what you've said, as well as Tanner to an extent.  You both have made good points.