Well quite. The full might of NATO against an impoverished ex-Communist state approximately the size of Maine armed only with obsolete cast-offs. Well done America, you sure "kicked butt" there.
Now imagine what might have happened if the USAF had actually had tried to go up against fully equipped Red Army air defences. So much for Stealth.
He never puts it that bluntly. And well, admit that he has something to brag about. As an ex RAAF radar engineer I'm sure you realize that scoring F-117 with ancient S-125 is no trivial feat.
As to his country getting its ass kicked, well. Really, what other outcome was there ever possible, victorious Serbian banner over Washington?