The role of gear is overrated imo...
You can pop all gear you want, but if you have shit genes and/or havent reached your max natural gains it won't make you look like a pro. As someone said, you'll be puffed up and blotted. In the 70's pros prolly ised 20% of what is used today, mainly orals like d-bol, and still managed to look excellent (arnie, franco, nubret, etc)
Gear is just an icing on the cake, the cherry on top, not the whole thing. Genes, stamina, determination, and discipline - thats the real tools.