I think the smoking gun resides in the 'other' supplements he is taking; although herbal testosterone potentiators can offer a small benefit over a long enough duration, it would be a very elusive prospect to get 'jacked crazy fast' on any OTC T-support formula. Also, just because something is legal, does not by any stretch of the imagination substantiate it as safe or having less of an anabolic potential than controlled/prescription substances; it merely means it has not been officially banned and added to the roster of C3 chemicals.
In my experience, and I will humbly yet directly make it very well known that I have a LOT of cumulative experience in my tenure as a physique competitor, trainer/nutritionist, and product formulator... taking multiple OTC Testosterone Support blends will only increase the ingested dosages to something more relevant or approaching the clinically validated dosages most proprietary blends are based off of, yet ignore.
Aside from the injection and ingestion of copious amounts of AAS coupled with a relentless training and nutritional regimen, quantum leaps in lean tissue accrual simply cannot be materialized by implementing any combination of OTC nutraceuticals - and certainly not with any amount of significant measurable expediency.