Its probably a little more basic than the one you linked to, it uses keyvalues to store the kind of data that the plugin was using anyway - # of pounces, # of dmg pounces, total pounce dmg done, # incap pounces, incap pounce dmg done & highest ever damage pounce (which, at the moment, can be listed in a top <n> style as a list of the top <n> personal bests on the server, not necessarily the top <n> dmg pounces as the list only gives each user's personal best [i.e. 1 entry per player] - I figured it'd be the most fair so the very regular players on a server don't just completely fill up the top scores with their pounces).
It's fairly basic atm but overtime I hope to make it a bit more advanced as I add more data collection (e.g. I've been trying to figure out a way to separate attempted pounces vs just pouncing to get around the map to give a pounce success rate) and processing to it