Let's look at the "genetic freaks" from the 2007 roster.
Kobe, Lebron, Amare and Howard. That's 4.
Kidd, Redd, Deron Williams, Carmelo, Chandler, Billups and Mike Miller ARE NOT "genetic freaks" by NBA standards.
You don't think guys from the '90s lifted weights???
Jordan was known for his weight lifting and bulked up a lot from his early days, anyone who follows basketball knows this. David Robinson was ripped and Karl Malone was a freaking beast. Pippen was slender but muscular and certainly wouldn't be pushed around by Kobe. Barkley was a beast as well.
Many from the '92 team even played against Billups, Kidd, Kobe, Mike Miller etc.
Most of the guys from the '92 team played into the late '90s and early 2000's. The gap is not even close to as big as you are making it out to sound.