Small difference are to be expected. The dashboard only updates once per hour, a few minutes after the hour. So the utility meter would always be more accurate and a bit higher.
Ok, understood. Just check now, view minutes after the hour and indeed the differences are much smaller now. This seems to be a good explanation for the seen differences.
Your first example seemed to jump from below 10 to above 1.300 so that would not qualify as a small amount. But if you charged your car or something it could be normal too I guess.