Caseys results were from muscle memory and gear , rest and food. Ill bet he didnt have a job during the test......
exactly.
viator was a genetic monster and jones was smart enough to realise that he was the perfect candidate.
he hadn't trained for quite a while and casey and arthur had a previous trainee-trainer relationship where arthur knew exactly what buttons to push, how to feed him, how to hormonise him, recovery, motivation, etc, etc. he also had seen casey make massive improvements in a short space of time before. casey was arthur's frankenstein, he thrived on brutally hard work, trained like an animal and, as pointed out, had nothing to do but train, eat, hormonise, sleep, rinse, repeat.
jones knew that casey was his golden goose, he even had assistants carry casey from each exercise apparatus when he was done.
all casey had to do for that whole time was
GET BIG and he had every tool in the box to do it with.