Link is in favor of killing the World Eater but doesn't know anything about tech. The plans so far mostly shoot right over him but he still wants to help. He just needs to have things explained to him in language he can understand and have someone point him at what's needed.

Ardyn is NOT in favor of killing the World Eater. He sees this world as a tired, darkness-ridden beast that should probably be fully consumed and put out of its misery. He's not so motivated that he'd team up with it but he doesn't want to help kill it either. If it happens to get in his way he may attack it and try to infect it with the Starscourge... but he refuses to have any part in the nukes plan.