Something about taking a screenshot on a scaled display makes my first image (at 125% scaling) look bigger than it should be; at 80% magnification it looks about the same size as it does in my browser, so edges may not come across quite right. (100/125 = 0.8, so that’s probably not a coincidence.)

I set scaling to 100% for the second image, and that one looks true to life size, so it’s probably the better reference.

Edit: On comparison, it’s not the serifs. Maybe it’s the lighter overall color on the page, or maybe it’s the way that autohinting exaggerates the contrast between thick and thin strokes.