Was much too young to have that poster, but I had the opportunity to meet Mike, and speak with Mike rather frequently, both by telephone and by email.
Whomever has touched a weight in their lives, in the hopes of building a better physique, would obviously want to look like that.
This may sound silly, because all muscle is functional by its very nature, but Mike looks to be holding what is functional muscle, not excess or "bloofy" muscle.
There is not doubt he was assisted in his quest to build the optimal physique, but what is presented in your picture appears (especially to the mind of a late teen/early twenties trainee) to be attainable with loads of hard work.