A meaningful stat since it is the only one that has a determination on post season play. It may indirectly say something else about starters vs. Relievers : Starters lose when they surrender more runs than the offense generates , and the offense never recovers the deficit . Relievers win when they are pitching during a game where the starter goes less than 5, or a tie game is salvaged for a win, or when the offense overcomes a deficit left by the starter ( or prior reliever).
If I knew nothing (often the case) other than the W-L record, I would be somewhat suspect of the offenses ability to score before the 5th inning, and that the offense can usually score on the opponents bullpen. Finally, once the Sox are ahead, the pen "wins" game at a .678 clip. Sound familiar ? .678 x 162=110 wins, shades of 2018's win total. Not truly relevant but interesting coincidence.