The good news is that although there's a slight cardiovascular advantage to jogging, brisk walkers typically burn as many calories as the average jogger. The only real exception to this would be marathoner runners who "carb-load" for a couple of days ahead of a race.
As long as the typical healthy walker doesn't eat nothing but pasta for two straight days, we can burn as many calories as a jogger can! Now go take a brisk walk....and smile!