Off-topic, but directly related: The real gains (and losses) come via aerodynamics.
I watched a small 15 year old girl following a large powerful man during a flying 200 in training for fun. The guy was one of DLV's top sprinters and could ride sub-12s F200s (pretty good for DLV). She would normally ride 14.x F200s.
He gave it full gas expecting to drop her. She literally didn't drift more than 6-8 inches from his wheel the entire effort. It was like they were riding a tandem. That's how crazy aerodynamics works.
I wish that I had paid more attention to aerodynamics instead of power when I was all-in with the sport. I suspect that I would have had better results.