I just did three battles. I attacked one player 3 times - 1120 skulls each time. I attacked two other players 1066 and1041. I also won skulls after the battles for an extra 66, 65, and 67 skulls. When I add these up, I get 5665 skulls. When I go to rewards, it shows I captured 3962 skulls. The skull bonus for the battle was 10%. I tried checking the wiki, but the explanation was unclear. Can someone please explain the calculations to me? What are the formulas for skull calculations? How does the total of 5665 get transformed to 3962. Thanks!