If anything, this shows that WPA is a somewhat shoddy stat sometimes. It captures some really great and really bad performances, but it also miscategorizes pretty bad sometimes.
Farnsworth listed in the “best games” is almost laughable. I mean… the guy came in, hit a guy, walked a guy, and was bailed out by an entirely unorthodox and unlikely double play. The outcome may have ended up all right, but no thanks to Farnsworth on that inning.