From the article:
The lab scraped both sides of the waist of the long johns JonBenet was wearing over her underwear the night she was killed.
This area was chosen, the release said, because it was assumed that her killed took off JonBenet's clothes and then re-dressed her and would have handled the long johns.
The lab notified the DA on March 24 that DNA was found on both sides of the waist of the long johns.
That DNA matched the DNA found years ago in JonBenet's underwear
Hardly likely that the same man touched her longjohns and her panties in China.
I have a bridge to sell you.