brunswicks rough buff and factory finish high gloss polish are two different products. the factory finish high gloss polish is a gritless polish that is applied over whatever grit you have sanded/scuffed the ball to. this polish will give your ball more length down the lane and will also increase the backend reaction when the ball hits the drier part of the lane. the reaction of the ball will be more skid/flip. the rough buff is basically a rubbing and finishing compound. it too will give the ball more length( though not as much as the polish )but will not create that skid/flip reation. the reaction will be more even arcing. the use of these products depends on many factors: ball speed, lane conditions, axis tilt, axis rotation, etc.