Yeah Micah, THD and MHD take up about half the space in their compressed form as the uncompressed PCM does, so there's some space saved that can be used for other video or audio purposes.
You're still not fully grasping the fact that the uncompressed PCM and the two loss-less compressed formats give exactly the same result: a bit-for-bit identical reproduction of the master recording. So, none of the three is any better as a format, and it's up to the producers of the recording how good a job they do with whichever they choose to use.
Of course, there's been quite a bit of hype about what really isn't a very big deal and it should be remembered that we've had a format around for quite a while that has provided uncompressed audio: the CD.
