[the 'stache]

The area where Mays wins the argument is his defense. Otherwise, if we're talking offensive production, the "clearly Mays was better" argument is specious at best. Not so fast.

Consider the 162 game averages for their careers:

Mays .302 AVG, 36 HR, 103 RBI, .384 OBP, .557 SLG, .941 OPS, OPS+ 156
Mantle .298, 36 HR, 102 RBI, .421 OBP, .557 SLG, .977 OPS, OPS+ 172

Mantle won three MVP Awards
Mays won two

Mantle won the 1956 Triple Crown. Mays never led the league in RBI, so he never won the Triple Crown

Mantle, though he played four fewer seasons, won more home run titles, four to three

Each player won the batting title once

Mays led his league in runs scored twice. Mantle five times

Mays walked over 100 times in a seasons once, in 1971 when he led the league. Mantle walked over 100 times in a season on ten separate occasions, leading his league five times. Conversely, Mays never led the league in strike outs, and only struck out 100 or more in a seasons once. Mantle struck out over 100 eight times, leading the league in whiffs five times.

Mays led his league in OPS + six times. Mantle led in OPS+ eight times.

Though Mays hit more career home runs, he averaged a homer every 16.48 at bats. Mantle averaged a home run every 15.11 at bats.

When their OPS is adjusted by the ballparks they played in, Mantle clearly comes out on top.

Mays was the far better base stealer, and there's no comparison. But oddly enough, Mantle was the more successful base stealer by the percentages. Mays stole 338 bases in 441 tries (76.64%). Mantle stole 153 bases in 191 attempts (80.10%).

The one thing to keep in mind about Mantle is that he tore his knee up as a rookie tripping over a sprinkler head in the 1951 World Series. He was never the same after that. When he came into the league, Mantle was the fastest man in the league bar none. In a foot race, he'd have left Willie Mays in the dust. That affected his base stealing, as well as his defense. Now, I can't hold that against Willie Mays. There's something to be said about staying relatively healthy, and playing longer. But Mantle's knee injury was not due to negligence on his part. His late-night carousing had nothing to do with that injury, at least.

If I were forced to pick one player of the two, I'd pick Mantle by the slimmest of margins. In his prime, he was the better player. He was not as decorated in the field, but Mantle managed to hit 536 home runs with injuries that would have kept most players off the field. How he managed to do that is a question that will float around in the back of my head until the day they bury me.