Something that makes a real guitar special is the 6 strings, each capable of having its own slight variant on tone and tune, being affected by the sound coming from the amp, and even affected individually by placement of the fingers on the fretboard. I don't know if this will ever be obtainable digitally in my lifetime. Not with a system that tries to capture the playing with a guitar pickup and convert it to MIDI data.

This post edited for speling.