For driving fasteners impacts are better. For drilling drills are better. Impacts can drive fasteners that would stall a drill, but drilling metal with an impact would make a dog's dinner of the bit and piece.
edit: the impact engages at a mid-low torque. That is the point. They drive with the impacts, not direct drive. The ryobi will start impacting about a quarter though a 2" deck screw.
Was that a washer from The Can™? No quick fix is complete without three different screws fished out of The Can™