Did the US write Stuxnet? Deputy Defense Secretary won't deny it
nakedsecurity.sophos.com
nakedsecurity.sophos.com
Or it's possible that he's not authorised to deny the US's involvement for reasons best known to the higher echelons of US politics.
Or maybe even the USA, were involved in Stuxnet but Lynn realises what a monumental sh-t-storm that would create on the international stage so he thought better than to confirm it on a CNBC documentary.
Or maybe Lynn knows the US had nothing to do with it, but admitting that would make it easy to tell when they do have something to hide.
This is indeed a reason that a standard response about national intelligence issues when questions come from journalists is "We neither confirm nor deny that . . . " That does a little, at least, to reduce the signal given to foreign intelligence agencies about the underlying facts by responses to journalists.
http://www.youtube.com/watch?v=rOwMW6agpTI
It's well worth watching anyway, lots of good info on the various exploits used by stuxnet, down to the opcode level. He's a pretty funny guy as well.
I agree with your overall conclusion about who wrote Stuxnet, but Wikipedia is not at all a competent source for information on any such issue.