There's actually a debate happening right now that this is not a playoff-capable starting rotation. A comparison:

Dodgers:
Paxton: 4.40
Yamamoto: 3.00
Miller: 8.52
Buehler: 5.38
Glasnow: 3.49

Cubs:
Assad- 3.73
Taillon - 3.27
Imanaga - 2.91
Justin Steele - 3.07
Matthew Boyd - 2.72

Dodgers won WS