The problem with this chart is likely with me. I couldn't for the life of me get the hang of these "chord-green hammer on-chord-green hammer on" sequences. This was bad enough in Thunderstruck, but at least you could anchor green there.
Apart from that issue, though, this is by far the weakest guitar track in the Pantera pack. It's repetitive (that's a given - it's groove metal), it's a bit annoying in some bits, and the out-of-nowhere solo is just that little bit too fast and all-over-the-fretboard for my tastes. This is not really a bad guitar chart, but it's filled with factors that are quite frustrating (for me, anyways).