It seems if you read this from the link I provided...
MFSL's exclusive "half-speed mastering" also allows us to use only one-fourth the power that real time cutting takes. So we never have to push our cutting head amplifiers to their limits. This gives us much more head room for far superior dynamic range, top-end and overall frequency response, along with better stereo separation. And we don't use transformers or employ limiting in our cutting process."
...that we are both correct.
MFSL's exclusive "half-speed mastering" also allows us to use only one-fourth the power that real time cutting takes. So we never have to push our cutting head amplifiers to their limits. This gives us much more head room for far superior dynamic range, top-end and overall frequency response, along with better stereo separation. And we don't use transformers or employ limiting in our cutting process."
...that we are both correct.