That is an excellent picture to give people an idea of the sizes of adult snakes of each gender.
Of course breeding pics get posted all the time which give some idea of the contrast in size, but those usually don't have the handy 12' squares for size reference.
LOL - my 25 year old boys are barely 3 feet and 1500 grams and look no bigger than most of my 1 year old girls. I think they're makin' them bigger now days - all them fancy genetics and stuff