which part of batio in that video is bad exactly do u mean the whole hair metal thing ? and as for herman generally he can do it when he isnt pissed if u look at this years download festival he did the song very accurately although 90% of his shows he tends to be pissed (usually not as bad as totman but still pissed)
batio's playing in that video was completely off key most of the time, his 'solo' was just appalling sounding chromatic runs with no thought to phrasing, harmony, tonality, y'know the things that make music sound good.
As for Li, the stuff he plays is no where near the level of true virtuoso's.