I found arcade=1 very illuminating when I first set that up. Definitely shows some of the behind the scenes actions and the distinct differences between types of shells impacting on a target.

Greybeard: Just to be clear... this data is old. The values are still relevant and the lines for each gun represent what is happening in the damage model. It gives us a clear idea of how much punch (kinetic and explosive) each shell in the belting for each gun does. We don't know a few of the specifics for the damage model in how they all interact but the bottom line is that all are judged by the same model. Whats less clear is some of the weapons that were added in the years after 2002 when this data was presented.