I stumbled across a Bill James article a few months ago where he was putting together a HOF of 5 players to best represent the history of baseball. He was making up the criteria for it (one being that he wanted to cover as many years as possible in the 5 players), it's hardly his most 'scientific' article, but it was really cool. His final 5:
Honus Wagner
Babe Ruth
Satchel Paige
Willie Mays
Barry Bonds
Paige, he pointed out, was called the 'best pitcher I ever saw' by the likes of Williams, Dimaggio, Feller, Dean and others. On top of that, if you just look at his first couple seasons in the Majors, he put up two of the best seasons (even coming mostly out of the bullpen at ages 45 and 46) ever by a pitcher over age 42. And this was after ridiculous wear and tear, injuries and the loss of his fastball. In terms of value, they were better than Clemens (at ages 43-44) or Wilhelm and Neikro (45-46), without relying on a knuckleball. They were significantly better than what other famous old pitchers like Randy Johnson, Nolan Ryan, Cy Young, Gaylord Perry and Jim Kaat were doing at that age. I have no problem putting Satchel in the top 5 pitchers all-time, without a real statistical record, and I can't make a truly passionate argument against people who put him #1. I don't put him there (because it's basically impossible to analyze properly), but what's the argument against him other than 'he didn't get a chance to prove it for sure'?