So, in other words, the teams that did well mainly did so because some other teams were unduly affected by injury while they, fortunately, weren’t.
Not buying this excuse at the major league level. The front office has to prepare as if every player will go down, and have backups in place. However that is done. Institute a better player fitness program. Employ more younger players not subject to ready injury. Develop a deep bench so that players can be appropriately rested without damaging the team’s competitiveness. Hire a coaching staff that knows how to teach good form and monitors players so they don’t act in ways that unduly risk injury. Etc.
The Nats had the season they had, ultimately, because of how the entire organization was run, from top to bottom. If a team can’t manage player injuries effectively, over 162 games, they don’t deserve to be in the post season. Period.
Taking responsibility for poor results now is the surest way to get better results next time.