Yes, Yamaha's mega guitars sure do make a difference in adding realism, but part of that credit goes to the fact that they don't need to add another standard midi guitar to play the notes the former was unable to play.

They did it right at the beginning.

Now, with the newly added GTT mode, the voicing is based on a real guitar player's way of doing it. Audya needs two guitar players, each one playing a different instrument, to accomplish (sort of) the same thing.

Pretty lame, and quite likely done at the last minute, probably due to lack of resources to finish the job properly.

Ian