Ok, let's see why this wasn't a definite, assuming Town!Pesco-->100%Town!Affinity logic and Town!BT.
Town!Pesco -> Scum!Dormio+Town!Affinity -> Scum!Shadoweh
Scum!Pesco -> Town!Dormio+Scum!Affinity/Shadoweh
Now, let's see why this is a definite, currently.
Town!Pesco -> Scum!Dormio -> Scum!Affinity (Scum!Shadoweh would have hammered Town!Pesco)
Scum!Pesco ->Town!Dormio -> Scum!Affinity/Shadoweh
...OK, turns out this actually isn't a definite, but I'm inclined to believe Pesco X Affinity over Pesco X Shadoweh for obvious reasons.