I agree with jimbo that these are real. The "Best" is rather strangely formed but looks right too. I would find the lack of contrast for Brian and Roger off-putting but I guess it is more important that the rarer Freddie and John are nice and clear.
The recording of the album was done during studio down time, in between bigger artists (including Bowie) coming and going, which didn’t help. I like the rough feel to it but as songwriters they were definitely still a work in progress.