So we know that the "evidence" found in Danielle's bedroom and elsewhere was that of the perp and not Westerfield? If that was the case Westerfield would not have been arrested.
But he was arrested and charged....he was excluded on all DNA or prints found in that home....the unidentified prints are on the desk in her room, the stairway bannister, the sliding door, the garage door.
The DNA on her blanket excluded DW but was not matched to anyone else.