I think you are grasping the concept of the symbolic meaning imbued in religious traditions. From that point of view one can assume that there are particles of truth in the numerous traditions. However I would contend that there is a hierarchy among those traditions and that some, and specially one, is more truthful that the others.
Discussion
In my view I don't think we can accurately judge the traditions (example, Christianity, Buddhism, Stoicism, different churches) per se and establish a hierarchy there. It's too relative and abstract.
But I do think there's hierarchies of groups of principles within any and all traditions.
In my view, principles are our best bet at creating any sense of understandment. In other words, I do believe some principles are MUCH more important than others, and there we can and should create a hierarchy of principles.
Christianity and Buddhism can be as evil as everything else. Principles > individuals > groups.