Lord-god-kakashi
If this is the case why would that be said by Zuko? I mean You dont tell the first one born he was lucky, I mean thats just wired...I mean the secon one I can understand...bu the first?"Your lucky to be born" "Did you not want a chiled at all?"
I think he meant it differently. Zuko was such a failure in his father's eyes, where as Azula was "perfect." His father probably meant it was lucky for such a failure to be born into the royal family of such greatness, let alone be born at all into a fierce nation.