I didn't know who scott steiner was so I did a search.
It lists his stats at 6' 1" 270 If pro wrestling is like many sports that means he probably means he is more like 250 to 260.
To me at his heighth it would NOT take GH for the average person to get that big with dedication, proper eating, super suplements for years. Someone with horrible genetics might never get that big no matter what they did.
GH is not very good for size. Mixed with AS and Slin the combo can be good for size, but its more tha AS and slin that are getting you big. GH is great for that 'look', and getting lean. For size its
worth it only if you have money to blow IMO.