The problem with cereal grains their nutrition levels are very low. If you look at this study The importance of promoting a whole grain foo... [J Am Coll Nutr. 2002] - PubMed - NCBI The Importance of Promoting a Whole Grain Foods Message presented as part of the grains for health symposium or some such
"Whole grains deliver a unique nutrient package. Rich in phytonutrients, whole grains contain vitamins and minerals, unsaturated fatty acids, tocotrienols, tocopherols, insoluble fiber, phytosterols, stanols, sphingolipids, phytates, lignans, and antioxidants like phenolic acids [11] (Fig. 1). The average antioxidant activity in whole grain cereals and whole grain breads is at a level similar to that of fruits and vegetables, on a per serving (Table 1) or a 100 gm basis."
They want to compare 100g serving of eat the problem is on a per calorie basis they fail.
100g of bulgar wheat = 360 cal
100g of tomato = 18 cal
100g of broccoli = 35 calories
Looking at those sorts of number veg is 10-20 more nutritious than grains....and we have not started with animal protein yet.
They may have a complete complement (ish) but you could never eat enough.
In addition 100 g of sugar has 387 cal ...only 27 more than bulgar wheat.
Eating primal is not a diet, it is a way of life.
PS
Don't forget to play!