Redefine what you mean by "inaccurate." If what you mean is, it's not exactly like the original artist, then duh. However, if you redefine what you mean to be an arrangement on that song, then it stops being inaccurate and starts being another way of playing that song. Even artists who perform their own songs over and over change it up. By your first definition, they're playing their own songs "inaccurately." Music isn't about mindless repitition. If that's what you want - go put on the album. If you want to play music, you must learn to appreciate interpretation. Try playing Stairway to Heaven, but do it in a Reggae style. Try Angel Flying Too Close to the Ground with shredding or as Flamenco. Break out of the mold and get your head wrapped around interpretation. Plus, if you're good enough to know that it's "wrong", fix it and give us all the benefit of your prowess.
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