"I assume seeing my face is.. hard." Bruce tries to break the silence, noticing how you explain the mystery without looking at him directly. Yes, it is hard for you. This whole universal meeting is indeed hard when you have to work with the little brother who was killed in your universe. Bruce himself never had any siblings in his world, but he knows the loss you experienced. However, for you, it was your parents and your sibling. "... I can replace me with Super//man if you want." He tries again. He doesn't know why, perhaps because of another dimension or not, he kinda feels like your younger brother already. Sure, you both are Bat//man, but it's obvious that you know more than him. And yes, Bruce knows this is a matter of universal crises and he can't be emotional, but... like, come on, he is literally seeing his older sibling from another dimension.