The phrases “Game 2” and “Game 5” don’t have the same cognitive charisma as “Game 7.” They don’t wield the same weight or haul the same history. But 2017 — the year in which the Houston Astros defeated the Los Angeles Dodgers for their franchise’s first World Series title — will go down as the rare year in which Games 2 and 5 actually outshined Game 7.