I went to the show last year because:
a- I got free tickets
b - Lamb of God was opening
It was not a bad show. Very different than the real Pantera, which I've seen many times in the 90s, but not a bad show in its own right. Phil sounded great, Charlie and Rex sounded killer and Zakk sounded great too, just in his style, which is very different than Dime and throws the whole band sound in a different direction, but I honestly prefer it that way than someone trying to imitate Dime.
so is it Pantera? No. Is it bad? Also no.