The point is that in the least convenient world for you, Omega would say whatever it is that you would need to hear to not slip away.
The least convenient world is one where Omega answers his objections. The least convenient possible world is one where Omega answers his objections in a way that’s actually possible. And it may not be possible for Omega to answer some objections.
The least convenient world is one where Omega answers his objections. The least convenient possible world is one where Omega answers his objections in a way that’s actually possible. And it may not be possible for Omega to answer some objections.