Clark, the thing I'm trying to stress is that OM is functionally pretty much OM once it breaks down to black with the significant difference being pH. The organic matter that is most convenient and ecological and least expensive being my preference. However, wood compost I have access to around here usually is at a pH in the low 6's while yard waste compost seems to come in at over a point higher, in the mid 7's. The yard compost is from leaves, and grass clippings mostly and the wood from chipped hardwood.
This means I can't use the yard compost for blueberries but both seem to work well for tree and most vegetable species I grow.
I mulch with shredded wood, wood chips and hay and I admit to preferring the hay in the vegetable garden, but trees also seem to respond well to it and vegetables to shredded wood if I compensate with a bit of extra N (from pee pee). Both create a rich, nicely draining top soil over time- perhaps too rich for fruit trees.
If you actually have access ti some of the woman's research, as opposed to lectures, please provide me with a link. What I came up with on the internet made me somewhat suspicious of her integrity but I'm not suggesting any verdict. I'm just used to scientists backing up statements with specific research.