DFK = Duelist's First Kills in map
DFD = Duelist's First deaths in map
TFK = Combined First kills in Duelist's team
TFD = Combined First deaths in Duelist's team
TR = Total Rounds played in map
[(DFK+DFD)/(TR x 2)]-[(TFK+TFD/(TR x 2)]
Will tell you how proactive a duelist is compared to the rest of their team, where the highest value possible is +1 and the lowest value possible is -1