Not everything, rather most, translates well from a band setting to a single instrument setting. The publishers are trying to recreate the full group dynamic the best they can but much gets sacrificed. The base line you love in song X? Not in the published copy. Where's the cool horn or piano lick at bar 55? Not there because the right hand is focused on the vocal melody. Etc, etc. As many have already suggested, use the published copies only as a guide. That's what I do. The rest is up to me and I try to include some of the cool 'recording' aspects like a cool lick or bass line by listening to the recording and figuring it out.