The only way you can tell is by saving a full-size jpeg and then comparing it with the Raw at the same zoom levels in DPP. Otherwise what your are seeing, here for example, is a large file that has been shrunken/compressed for viewing in a Web browser or other jpeg Image Viewer. You will never see the same "sharpness" as in a good Raw viewr because most of that sharpness has been obliterated by the compression. A full-size jpeg if zoomed to 100$ view will show the low-level of sharpening that DPP has applied.
A couple approaches to this: in DPP, when you are ready to Convert/Save to a smaller size, apply a fresh round of sharpening first.
Or, take a possibly more effective route and convert and resize to the smaller size, preferrably as a tiff or at least as a High Quality jpeg, and then at the viewing size for your needs (for the Web it will be viewing the smaller size at 100%) apply an appropriate amount of sharpening in the sSRGB tab, then convert and save for use. This should get you closer.