Bruce took in the set of Superman's shoulders, the lack of argument and protest and quickly came to the obvious conclusion. That had hurt, and the issue was something that mattered to the man. He wanted to be seen as he was and trusted, in spite of but not because of it.

Bruce wasn't all that trusting, but he both had a means of manipulation (for positive and negative) and more trust than he'd had.

"If it's repairable you can take it back to the compound and save us the slow trip back." Was that a concession? Kinda. "You've been... enormously helpful here." So far.