Bear in mind that AA backs are about an inch longer, and AA fronts about an inch shorter, than the Freak equivalents. So a Freak back with a 14" AA front will only be 13", but an AA back with a 14" Freak front will actually be 15".
The AA front is easier to clean, and shoots through breaks quicker than the Freak front, because it traps less paint in the porting. Otherwise they shoot the same.