The guy was HUGE. I was an editor at MuscleMag when Paul Gardiner (the flagship store's manager kid) was planning his MuscleTech business. Greg would often stop by at lunch and hang.
However, as was said, Greg was never cut out to be a bodybuilder. He had a wide waist, turnip thighs and weak leg depth, shitty arm thickness (brachialis)/detail, crummy overall shape and zero aesthetics. Not to mention the man's epic gut.
And his strength wasn't near what it was trumped up to be. Check out the video. He has five plates on incline Smith and does three tough reps all by himself. That's essentially 465 on a machine that balances the barbell. Strong, sure, but not anywhere NEAR what would be required to bench press 700 pounds, or for that matter, flat press five plates with a free bar for sets of more than, say, five repetitions.
I am quite certain he couldn't deep squat shit, either.
MuscleTech made its start with Kovacs and then bailed on him when it was obvious he wasn't going anywhere as a bodybuilder (to put it mildly). But without Greg, MuscleTech wouldn't have become anything. And with MuscleMag in Paul's corner, as well, for whatever reason, it went on to become one of the greatest successful scam companies of all time.
That anyone purchases its products is a mystery.
But, yeah, Kovacs was once a MONSTROUS human being.