Milwaukee M18 FUEL Sawzall 2821 wins on performance with its 1-1/4 inch stroke versus DeWalt's 1-1/8 inch, enabling quicker cuts on 2x lumber per Milwaukee data. DeWalt DCS386 offers ecosystem compatibility for existing 20V users but trails in weight and stroke length. Milwaukee leads 4 of 6 score categories with measurable advantages in speed and ergonomics.