The funny thing is those guys actually do look better than a lotta naturals who train for years 
Steroids aren't needed to look good, these guys were living proof of that.
Unfortunately, they also lived a hunter gatherer lifestyle with very little stress, absolutely no mixed breeding (thus diluting their genetic genepool) and ate no artificial / processed foods. It was a diet rich with bush fruit, veg and lean meat.
I would say not even 1% of all bodybuilders could achieve that look naturally. It would require a lifestyle chance to the nth degree.