Shorter is definitely better than Pre. No question about that. An Olympic gold and silver, multiple Marathon Majors winner, and his PRs rivaled Pre’s at every distance.
Now having said that, Prefontaine was still great. American record holder at every distance from 2k to 10k and a high win record with seldom losses (I don’t have the win-loss record in front of me. I’ll check later). Granted his wins were mostly against collegiate and domestic competition, but still it’s pretty impressive. Where does he fit on the list? I’d put him somewhere around 18th in a top twenty male American distance runners list.
Now dying young does normally give someone already famous a kind of elevated mystique about them. I would say if he had lived that he would not have the kind of legendary status he has now from having died so young. I still think either way he is objectively a top 20 guy. Fourth place right outside of the medals and he beat several good guys. There’s also such things as star power and influence and no question he had both.