Good list.
Bitfury is somewhat better than that though, I measured +116W for adding a 150GH/s Bitfury unit to my rig. Gold-rated 1300W PSU at 440W@230V total now so I'd assume about 90% efficiency. Anyway, <0.8J/GH at the wall for Bitfury. Another guy had similar results.
Was this on the reduced speed boards? The reason I ask is if the boards intended for 25 GH/s are getting 21 GH/s then they are essentially underclocked (even if unwillingly) and that will improve efficiency.
Was the 116W increase at the wall?