On the contrary, there is one VERY interesting result from this blog post, discreetly hidden in the non-google-translatable areas.

Friedcat has now implicitly announced an estimated efficiency for BE300 miners, with these profit numbers. The top row is labeled "average power cost of the rest of the network," and the chart seems to be a model for how much the BE300 will earn (per TH/s???) with different power costs, from which we can probably extrapolate its efficiency. However, the chart doesn't have a legend, so I can't actually see what these numbers mean...