The chubby child big name of a controversial Nike advert that aired all through the 2012 Summer time Olympics has shed 32 pounds prior to now six months, and credits partly the advert titled “Greatness” that made him well-known.“I would never have modified my standard of living if I was by no means on this commercial,” Nathan Sorrell told TODAY’s Savannah Guthrie on Thursday. “That’s no longer the only purpose, however that really did help.”Now …