The outcome of this fight depends on the stringency of drug testing. If lax, Angle will beat Herschel Walker like a government mule. If strict, Walker should win easily.
While I really want to believe Walker keeps his 20-year old, college football RB physique from tons of push-ups, I'm not 100% positive that he's always been clean either. Someone once showed pics of him now compared to Sports Illustrated shirtless pics of him in college, and he's bigger and more ripped now.
There are teammates I have heard claim his diet/work out he said he followed was basically kayfabe for PR.