The TS obviously, has not heard a lot of VH songs. You can never compare "Tech Diff." to "Eruption", simply because the former is well, in fact, a complete song, while "Eruption" is more of a skill showcase.
Now, here's the thing, EVH can definitely and absolutely nail "Technical Difficulties" effortlessly, but, I don't think PG can capture the emotion, let alone play the way EVH played "Respect the Wind".