In spite of the fact that Obama always makes the wrong decision...there IS a possibility that there will NOT be a pardon.
Obama caught hell for the trade of the 5 worst terrorists in Gitmo for this deserter. Lord O expected praise, not flack.
Further Bergdahl is white, not black. Obama is a racist.
Those two factors could well mean no pardon.
OTOH, the little puke is a Muslim and his parents are Muslim Brotherhood sympathizers, so that sort of balances out the Black/white side of the scale a bit.
There is one rather hopeful bit of information on this, though. I have observed that Obama tends to run these pardons, sentence-reductions, etc. through a herd of DOJ bureaucrat lawyers since the amount of actual legal knowledge or expertise that Obama has couldn't fill a thimble. This usually takes quite a bit of time. Given that there's about 47 and one half days left before he leaves the White House, there is some likelihood that the clock will run out on the traitor before the bureaucrats can get around to telling Obama what to do.
Ironically, in this case, it's possible that it's actually to the country's benefit that Obama is the affirmative action President, not knowledgeable or learned enough to actually make decisions on his own.