Okay, don't educate me and make your point worthless. :(
It's a whole different form of playing and controlling of notes and articulations, piano != guitar and a guitar != a piano.
Just for the simplest concept, every note on the piano has it's own set of strings (1 to 3) tuned to that note while every note on a guitar has its fret and string and you shorten(or lengthen) the string to make the note.