What is meant exactly by the description 'more musical'?

It's a term of art so i treat it that way.

To me it describes how I feel when listening to music whether live or recorded. Does it engage me as oppose to overwhelming me with sound or conversely just bore me. Maybe say PRAT+

I get how this is highly subjective, but that's what it means to me!

"musical" for me is when a system or live performance is engaging, non-fatiguing, and very pleasant to listen to.  You'll know when it draws you in for more. 

In my opinion it means closer to sounding live.

i like your definition @decooney 👍

best test is leaving one wanting more... 

Musical means it sounds right. Isn't it obvious ?