I'm a fan of both but i'd rather have cam newton. At 6'5 he's less prone to injury and he may not be as quick but he's elusive enough. Last night really sold me on him, avoided contact but got the yards and into the endzone too. Rg3 would worry me with injuries. Though he is a beast himself.
That cam newton commercial with the small kid asking him questions "so i can be drafted #1? You can become my back up? Become your mom's favorite player?, just loosening my arm"