People forget that Joe Montana did NOT have Jerry Rice for his first two Superbowl championships. Rice's rookie year was 1985, the year after the 49ers beat Miami for their second Superbowl with Joe Montana. Montana and Young are two of the best Qbs to ever play the game. They could both thread a needle on the run to a receiver who wouldn't even have to break stride to catch it, or run for the first down themselves. Young's completion percentage and quarterback ratings (both single season highs as well as his total for career) are higher than Montana's. If you value statistics, then, Young is the clear cut winner. His running back mobility made him even more dangerous than Montana as well. Once the team made the playoffs, however, Montana was magic. Unless he got knocked out of the game, he'ld usually find a way to win. In Young's defense, though, while Montana faced great playoff defenses during the 1990s (and sometimes lost to them, as with the playoff losses to Minnesota and NYGiants) , he never had to play a team as good in all facets as the1990s Cowboys, and the one time he did, he lost. Young defeated them on the way to his lone Superbowl, but fell to them more often, ending more than one 49ers season. Also, the 49ers defenses during Montana's tenure were better, and the total team talent, according to Walsh, was better. He calls the 1984 49ers team their best ever. While I think any team would be lucky to have either, Young was better in the regular season, and Montana was better in the postseason. They were both great.