When paired with the proteins in miso shiru, tofu, and shitake mushrooms both will become adequate. My packet of Uncle Ben's brown rice says it has 5g/serving... Whatever. The figures I've cited are from the "US Rice Foundation". (The link is on the first page for their chart.) 2, 3, 5, 7 are all insignificant values for human life. Basically folks, if grains are your main source of protein you need to eat a worm or an egg or something right now. You can process soy beans into tofu or miso later. Eat the worm. Now. Egad. Grains are only a meaningful source of protein when paired with legumes. And even so, you'd wind up with less protein from a huge bowl than from an egg. Eat rice because it tastes good. Eat a wide range of grains because they're great. Eat a wide range of greens and sources of proiteins because they're wonderful and available to you because you don't have to gnaw on a raw root while waiting for the next incursion to take out your village. Eating brown rice instead of white has no meaning unless it's delicious.