It is expected. There are two things here to point out:

1. DPR doesn't matter for the breakpoint checked, as it will always be in your browser 1600px (those are CSS pixels).
2. scrset is searched here by calculating 1100DPR so 11002=2200px so taking the 2000w (Firefox would take 2000w for result 1101px and higher and Chrome would take for something bigger because it has different algorithm of looking at the closest)