You also have to compare what types of sugar though, I don't agree with that article. For example while Kashi may have 1 more gram of sugar than Frosted Mini Wheats here is why you would still want to choose the Kashi over the two...
Frosted mini-sugar, high fructose corn syrup
Kashi-brown rice syrup,honey,evaporated cane juice
Huge difference between those two sugars and what they do to your body and insulin levels. Now cereal in my opinion should be a treat not a staple in a diet unless you choose certain kinds that are completely sugar free and made with whole grains and flax. Most of which you don't find in your local grocery but at health food stores.
Also this should speak for itself..
Full Kashi List of Ingrediants
Kashi Seven Whole Grains & Sesame cereal (whole: oats, long grain brown rice, rye, hard red winter wheat, triticale, buckwheat, barley, sesame seeds), textured soy protein concentrate, evaporated cane juice, brown rice syrup, chicory root fiber, whole grain oats, Kashi Seven Whole Grains & Sesame flour (whole: oats, long grain brown rice, rye, hard red winter wheat, triticale, buckwheat, barley, sesame seeds), expeller pressed canola oil, honey, salt, cinnamon, mixed tocopherols (natural vitamin E) for freshness
Full Frosted Mini-
Whole grain wheat, sugar, high fructose corn syrup, gelatin, reduced iron, niacinamide, zinc oxide, pyridoxine hydrochloride (vitamin B6), riboflavin (vitamin B2), thiamin hydrochloride (vitamin B1), folic acid and vitamin B12. To maintain quality, BHT has been added to the packaging. (BHT can cause some allergys and health problems, though in a small amount in the population, still just another bad perservative.)