For what its worth, for attention based advertising (youtube and display, not search), FB targeting blows Google out of the water. Not sure why but its consistent across brands.
I have seen this myself, by I'm unsure if it's just a "ad quality" thing. For example, I can target exact placements on YouTube for my exact niche, and broad Facebook matching will outperform. I have tried YouTube and display for months with nothing within an order of magnitude as effective as Facebook.