Dissent on the judgment itself or on a confidence level would not keep a piece out of PDB; dissent would be noted in the piece;
After an appearance in PDB, Gang of 8 would typically have been briefed
1 - Condemn action from highest levels
2 - Suspend troop withdrawals from Germany
3 - Hold troop drawdown in Afghanistan until Taliban make good on peace agreement stipulations
"I think it's too much to call this a 'hoax'...I think it's too much to say 'this happened'" with certainty
Any number of other officials present -- National Security Adviser, WH Chief of Staff, VP, DNI, DCIA -- is capable of saying, 'In addition to what's in your book, you need to know X'