My IPEB directly quoted my shrink and commander on my findings/rating. The board said : "SSgt XXX's commander opines that he is unfit for coninued service... unable to performs tasks for assigned grade..." They put a lot of stock into at the MEB and IPEB levels (from my experiences).
When you apply it's almost a standard response to deny benies, Then you have to fight, which takes quite some time, from what I understand this was quicker than most due to the priority they are giving OIF vets.