I think both prelude and fugue is played very well. I really heard here less evenly played versions of that prelude.
Why should the prelude be played faster? Only because Richter and Gould played it in hyperspeed? I think the speed at which one can manage to come through more or less evenly through relaxed hands and also with enough capacity to listen to the left hand part is just the right tempo.
Also the fugue is played very well - I wish I could play the left hand 32th parts as well as you do! The only mistake what bothered me a bit was in bar 20 last beat RH (Chris mentioned it already). The other reading errors Chris mentioned I would not have heard on my own, to be honest.