Generally not great to cherry pick or discount specific results, but their pythag numbers have to be somewhat influenced by the early blowouts, particularly the 12-2 and 14-5 blowouts in the Tampa and Boston series respectively.
Absent those, they would probably still be overperforming, but more modestly. Either way, they're a team relying on the close W more than the blowout... really outside of their 8-1 game against the Mets, they really haven't had one of those this year iirc. If they have can add a few laughers to their repertoire, that would help.