I so wish Alan Webb had an identical twin that was passionate about cycling. Alan Webb is the greatest cyclist that never became.
Anyway, Rojo were you asking how did Webb beat Ritz at 10,000? That's what I thought you meant, but then some other people got something different from your question, apparently. If I'm reading you right, my answer would be: Webb's 400 meter speed was about 3 seconds faster than Ritz and with Webb's aerobic capacity it took about 25 laps for them to be even. On that day Webb was better, but not always.
Personally, I think Webb would have had more success if didn't focus on the 1500/mile so much. It always would have been his best event relative to a WR, but in championship races he could have been really special in the 5000 and 10000. He also could have broke 2:10 in the marathon. Not a big deal anymore, but be had it in him.
He also could have won the Tour de France if he'd started cycling as a teenager.