The A’s cumulative winning percentage was .594, a 95-65 average record. They won 21 postseason games, but all were in the three title years: they were swept in both the 1971 ALCS and the 1975 ALCS, which is, in a way, similar to the Giants not making the playoffs in 2011 and 2013. Their WAR leaders, as Baseball-reference has it, were, from ‘71-‘75, Vida Blue (8.6), Joe Rudi (6.1), Reggie Jackson (7.8), Catfish Hunter (6.9), and Reggie again (6.7). The A’s scored a total of 3,500 runs in the five years, and allowed 2793 runs, an average of 559 per year.
The Giants’ cumulative winning percentage was .538, an 87-75 average record. They won 34 postseason games. Their WAR leaders, as Baseball-reference has it, were, from ‘10 to ‘14, Aubrey Huff (5.7), Pablo Sandoval (6.1), Buster Posey (7.3), Posey again (5.5), and Madison Bumgarner (5.3). The Giants scored a total of 3,279 runs in the five years, an average of 656 per year, and allowed 3115 runs, an average of 623 per year.
Given the sizable regular season advantage, in terms of both run differential and won-loss record, that the A’s have on the Giants, it’s worth noting that the A’s lost eight World Series games, but the Giants lost just four. While the Giant got by with just one manager, Bruce Bochy, in their 5-year stretch, the A’s needed Dick Williams and then Alvin Dark to manage them to the playoffs five times.