Those without bodybuilding genetics will always be skeptical of those who have them. It's night and day, kids. Not saying you can make it to the pro ranks on genetics alone, but the difference between someone who's predisposed to building muscle as opposed to the average getbigger is staggering.
Remember, Ronnie had no intentions of becoming a bodybuilder when he first walked into Metroflex and was competing 6 months later, which is the pic above. Why would he have even juiced at that point?