>>44941377Cares about as much as one would useful tool which gets damaged but is hard to replace. Ghetsis was upset because N would challenge him at all and rebelled against him.
His reaction to Hilbert showing up was very similar actually. He's a psychopath who thinks little of "random trainers from nowhere" being able to challenge him at all.
White Kyurem was struggling because Reshiram was in pain from the forced fusion, and this is canon. I don't think the Kyurem fusions (DNS Splicers) are the correct way to refuse Unova's dragon, it was just an older flawed attempt a more less developed Unova attempted.