Hello, I am posting on behalf of the official website at
http://thejourneymanproject.com The video sequences from the CD-ROM version were encoded at 640x140 due to disk limitations, and then played back at 640x280 by either duplicating or skipping every other horizontal line. The spherical nodes between the walk sequences could be displayed at the same settings to match the appearance of the video playback. However, there was a "best" quality setting that could render the spherical nodes at the full 640x280 resolution, thus approaching the quality of the DVD version. This may be the source of the confusion as some users may be comparing screenshots of these nodes, rather than that of the videos themselves.
In the DVD-ROM version, the nodes were reprocessed to compensate for spherical distortion and display with sharper detail than the CD-ROM version, albeit at the same 640x280 resolution as the "best" quality setting. On the other hand, the videos were all re-encoded at the native 640x280 playback resolution, double that of the CD-ROM version. The version hosted at GOG is using the graphics and video files from the DVD-ROM version. Hope this clears up any confusion.
Also, don't use the Presto Studios logo for comparison, as they are the exact same dimensions on both versions. You will be able to tell the difference by the video playback right after the logo sequence.