Dax, I've learned not to take your quirks seriously, but I have to ask, after this, do you ever read non-Halo books? Think about what those two authors are trying to convey in those stories. I was blow away by Human Weakness because the entire thing takes place inside the mind of an AI. Nylund helped flesh out a particular side of the universe and give all the Spartans very white names, but his books really do read like a screenplay with the same tricks and adjectives used over and over again, (the grenade rolled to his feet... new paragraph... and then exploded.) I'd have liked if a more talented writer had been able to edit his books for him.
Say what you will about this fiction, that all comes down to preference and opinion really, but as far as who is the better author, there's no question. I'm very glad writers like Greg Bear and Karen Traviss are working on the Halo novels instead of Nylund. Can you imagine Nylund trying to write Cryptum?