Is that true? My understanding was that, in games when you're down a fair amount, he doesn't use your Setup A first...
*Checking the FAQ...*
The A/B designation is an additional control for setting pitcher usage. An A designation will almost always be used before a B designation of the same role, e.g. if you have one pitcher set to Setup A and another set to Setup B, the Setup A would receive priority in a setup situation. If both pitchers are set to A, then the SimManager will decide who to use based on the situation (opposing righties/ies, pitcher fatigue, etc.).
Is down 6-1 a setup situation? I'm not sure how this gets handled. My unreliable memory tells me I've had it work that way, but the last couple of games (and you) tell me it doesn't.
Long-winded way of saying I seem to have been wrong.