it includes punches thrown during clinch which should not be counted from a technical and judging stand point
It also includes low blows and punches that were blocked. Still, CompuBox gives us general understanding of what was going on in the ring and no human being can provide more accurate statistics.
To those say it's good or even useful. Just watch Angulo Vs Kirkland Round 1 and then look at the stats Compubox had for the round. You will be amazed.
Mayweather power punching accuracy a padded big time because of illegal shots during clinch. That's 20/20 atleast
Not always - I think you just have to gauge it yourself when watching it. If the compubox numbers inform what you saw, then you can rely on them as an indicator. They're as accurate as can be, I'd guess.