What makes you say that? With hard work, eating all your meals on time, heavy training, supplements like protein powder and creatine, that look is attainable naturally, no? 
i'm not trying to put ben down in any way shape or form- he's a nice guy and isn't a dick head like alot of guys in this industry.
but to put it simply, no that build is not obtainable naturally.
you have to remember, he's only 5'9 0r 5'10 i think. in that photo he'd easily weigh 270-280 and in good condition (he'd look a hella lot better if he wasn't under those lights).
5'10, 280 @ <9% naturally?
don't think so.