These players have thousands of accounts. And they sell the accounts to others. When I created a new account and played for a while, I found that about 1/3 players in low rank (corporal or sergeant) battles could activate all supplies. Some of them have Brutus, while others make it because they do not equip a drone. It is true that these unfair account get experience quickly and lose their advantage. But the problem is that the number of unfair account is almost UNLIMITED. The torment for beginners will never end unless the unfair accounts are forced to equip Oracle.