Considering that he was on the bubble for a roster spot in March, this is a positive result.
By the middle of September, everyone knew that Matt Duffy wasn't going to win the National League Rookie of the Year. Kris Bryant turned around a mid-year slump and dominated for the last two months of the year, and Duffy was merely excellent. There's no shame in him losing to Bryant.
The bigger story is that it's November, and we're talking about Matt Duffy being a Rookie of the Year candidate. Who saw that coming? Where are we?