Yes, if Kaito gets erased he loses, but, for the last time, how and why? This isn't a test of who's raw power is better, the winner of that is clear, it's a mental battle first, and hax only when things properly escalate. What leads Zeno to delete Kaito or "the game", does how does Zeno pass and/or not break the taboo given his character? "It's a draw only and specifically in favor of Zeno cause "he can't lose"" isn't an explanation.