Gotta say I'm a little confused. (Destiny)

by Ragashingo , Official DBO Cryptarch, Saturday, March 21, 2015, 23:30 (3782 days ago) @ musicalwahine808

The "Mastered for iTunes" and similar labels for other stores aren't about higher quality files, at least not higher bitrates or different compression methods. It's about tweaking things on the front end so the end result sounds better after it passes through Apple's or Amazon's or whoever else's compression pipeline. Ars Technica had a decent article on this and a follow up where they did some listening comparisons.

Overall it seems like working with the songs so they sound better after compression is probably a good thing but as with most subjective audio stuff different people disagree on how much benefit it actually conveys. :)