The Acoustic Reality Experience BDs are remixed/remastered from licenced and previously released materials, for the most part, and of variable quality. 2L is a real label offering high quality original recordings. No comparison. Also, the 2L recordings are available on BDs and/or SACD as well as downloads.
The Acoustic Reality discs are not even "real" Blu-ray discs. They are actually AVCHD file structure burned on a DVD. The player sees the AVCHD folder structure and plays that "like" a Blu-ray, but you'll notice, for example, that it has to spin the disc at higher than usual speed to get the data read rate up to where it needs to be.
And if you read the liner notes, you'll find that their "7.1" music tracks are really sourced from 5.1 masters (originally made for DVD-Audio or SACD for the most part). I.e., the Acoustic Reality folks have digitally "processed" the 5.1 masters up to 7.1 to go on the disc.