Every signal vendor publishes what it picked. QL Signal Truth already goes further — wins and losses alike, receipted before the outcome. This goes one step past that: what happened on the trades the engine declined. Each decline was logged before the outcome was known, and graded by the same independent resolver that grades the trades we did take — including the ones we were wrong to skip.
Sorted worst-miss first — the trades the engine was wrong to decline lead the list, not the saves.