Ok... so I was super curious about this, so I uploaded the same tune on 3 different platforms...
SoundCloud, Band Camp, and Drop Box
The song has a lot of cymbal stuff in the first 15-20 seconds so it's a pretty good benchmark, I think.
IMHO Drop Box maaaaaayyyy have a little higher fidelity, but it's also way louder. When you compensate for Fletcher Munson, I don't really feel it's all that different..
Also, Bandcamp allows the listener to download a wav or flac of the song for free
What says you?
My LUFS came in at 12.7 on the original wav file fwiw
www.dropbox.com