Geez, I'm still just incredulous... Reading thru his "Tempo, Space & Music" it turnes out that yeah, besaically he's just cutting the tempo for everything in half, which leads to some truly absurd results.
Its bad enough slowing faster music down, but when it comes to music that is slow, it gets really bizarre. You have to go REALLY slow then.
And not only that but there is no historical justification for this...?

And as far as Bach's Orchestra Suites go, while they were not modelled on popular dances, but only derivative, they were still more or less based on those rhythms. It makes no musical sense, no historical sense and any sense of continuity and energy is lost.
Oh god, Beethoven's fifth sounds like a corpse drained of all its blood...
It actually sounds like muzak like this...