Well first, lets put on our thinking caps. Obviously the stone of Jas would not work on Jas because he created it single handily, probably not putting all his being into it. Second, the only reason Zamorak overcame Zaros is because Zaros tripped and accidentily transferred his energy to Zamorak, highly unlikely to happen again unless they want a funny troll.
okay and my comments earlier werereferring to the fact that tthe other player was basically reciting a rs version of the holy trinity (father,son, holy spirit)and that zaros's symbol looks like the holy cross