Maybe Ra’s al Ghul finally turned senile in his ancient old age. Why would you disable your control over 2 dangerous metahumans without even arming yourself with a sword. Also about that, shouldn’t Ra’s al Ghul be able to handle himself against Killer Croc even without weapons? I don’t care if he lost, but maybe put up a fight or something? He’s the leader of a group of assassins after all.
From – Injustice 2 #70