If someone wants an exact sheet, they need to pay for a licensed book and let the original artists earn a living. I liken the chords and tabs to folks sitting around in a really huge living room showing one another informally how they've arranged a song for their own performance. Anyone wanting exact reproduction of a record is chasing a will-o-the-wisp anyway. A single guitar and single voice is unlikely to be able to reproduce an entire band. For instance, I often strum to the main drum beat rather than to the way the acoustic guitarist on the record played. I find rhythm more evocative than harmonized guitar lines for playing alone. Tabs and chord charts just can't do that for you.
Further, I am one of those people who thinks that if you want to hear a precise replica of a song, play it on Youtube or iPod. Musicians SHOULD bring something of their own to the table when performing a cover. Again, that is something tabs and chord charts can't provide.
Granted B chord amnesty by King of the Mutants (Long live the king).
If it comes from the heart and you add a few beers... it'll be awesome! - Mekidsmom
When in doubt ... hats. - B.G. Dude