Maybe game needs a logic that rates the battle between 0 and 3 stars. Very effective trick that works miracles in other games. Everyone would like to finish a game with 3 stars!

My proposed logic: Every time player breaks opponents' phone, game rates players performance by comparing spent energy for both players. If both players have spent equal energy, player gets rated one star. If player has spent more energy than opponent, player gets rated zero stars. If player has spent less energy than opponent, player gets two or three stars. If player has taken all three bars, average rating is used.

To make sure this logic is not exploited by rerankers, additional logic could be added: If player has won with lower leveled cards than opponent, one star is added. If player has higher leveled cards, one or two stars are lost.

If player wins and has got any stars, player gets bonus rewards - little amount of coins, PvP tickets, cards or maybe more free lockers.