These attributes are mostly orthogonal though. Most evidence, even if conclusive, will show that certain approaches benefit one group more than some others. There is no such thing as purely evidence-based policy, because there is no agreement on what to optimize for.
I think this whole evidence-based fad completely misses the point. It insinuates that there is a perfect possible outcome that will benefit all equally, and that is simply not the case. And by focusing on the outcomes, it detracts from the real sticking point: let's talk about how to harmonize goals, instead of only results.