I would echo what BONER217 is saying here.
There must be thousands upon thousands of guys that have trained with Arnold's exact routine, eaten a perfect diet, done a sensible and well calculated cycle of anabolics, some probably were even of similar height and structure, and yet who has achieved a physique like Arnold's? Much less as a teenager or in their early 20s?
A handful of world-class professional bodybuilders maybe, and that's over the last 30 years combined.
Having said that, great things are achievable drug-free (see Jeff Willett, and many of the lifetime natural bodybuilders that looked incredible and won national titles during the 80s... fuck, look at BodySpace and browse for a while and see how many guys are proud all-natural bodybuilders that look ridiculously good).
Nothing is possible with endless excuses and self-limitation, though.