What is a decisive game?
On DeckBeacon, a decisive game is a win or a loss. Draws are out. Wilson Rating and win rate both use this denominator, with a 50-game floor.
A decisive game on DeckBeacon is a battle that ended in a win or a loss. Draws are excluded from the denominator. That choice is why win rate here is not "wins divided by every appearance," and why a list that draws a lot is not quietly punished in the percentage.
Wilson Rating — the 0–100 sort key — is a 95% lower bound over those decisive games. It is not a percentage. Usage still counts appearances, including games that drew, because usage answers "how often did this list show up," not "how often did it finish."
The 50-game floor
If a deck has fewer than 50 decisive games in the snapshot, Rating is not shown. The pipeline stores wilsonBasisPoints = 0 as a sentinel; the UI prints an em dash. Printing 0 would claim the list lost everything. It did not; we refused to rate it.
Fifty is a threshold, not a moral judgement. A new list on day one of a snapshot can be real and still unrated.
Why draws are out of Rating
A draw is not evidence the list is strong or weak in the way a win or loss is. Folding draws into win rate shrinks the percentage without saying why. Folding them into a Wilson score would do the same. We keep them visible in the battle counts on methodology-facing surfaces and out of the two competitive stats.
Sample, not your match history
Decisive games are counted in the bounded sample — Path of Legends logs from the crawl — not in your last session after you copied the list. Your import may also be missing Evolutions. Do not expect the sample's win rate to transfer one-to-one.