I think it would be worthwhile comparing the vinyl vs. the CD based on the very different mastering. According to the DR Database, vinyl measures as having extremely low compression which should result in good dynamic range. The source tapes being analogue might make this ADD recording a treat to listen to.
The CD and download mastered by RL has compression that is audible on my system. Even so, the digital is very well mastered. Thanks to @tallnotshort for the background details.