Classical music is way more nuanced and covers the complete spectrum of emotions, so what you really need to master is… Dynamics. Your fingers (and your whole body) need to master the millimetre precision of elite performance. Where everything matters. Your whole body needs to breathe, feel, and become the piece with all its varied emotions. As a metal guitarist you trade in aggression, frustration, hatred, resentment, and anger. People may call it power, but metal, especially the original kind