I think I'd go with 90 Def in man, 90 SB in zone and press. My theory re: press is that most of the trap attempts occur on the perimeter. If the off player "splits" the trap, I think SB becomes more important (to alter the shot) than Def. I'm basing this on RL basketball, and I don't really know how WIS programs it.
This is a great example of how WIS needs to create a user manual to help guide such decisions. We really have NO clue how HD is programmed, so it's simply a guess. We can try to use RL basketball reasoning, but that is correct on no more than an arbitrary basis. If HD offered the actual answer to this question, something like, "when playing zone, SB is more important than Def for the C," it would make for more informed/satisfied customers. Mind you, this wouldn't allow anyone to "break the HD code", any more than now, but it would allow users to approach the game in an informed manner. When one stops to think about it, it's actually incredible that there is so very LITTLE that actually tells us coaches how to play HD, and how it works in relation to RL (or not). Officially, I think there is only the basic system guide, which gives an extremely basic overview of the systems, and an extremely limited set of hints as to what ratings are important for each system. It's simply incredible, to me at least. There is also Z's effort, which is quite a document, but ultimately, it's never been vetted by WIS. They simply said, "thanks for doing our job, Z" and put it out there as gospel. I'm sure there are many statements that are misleading (Z would surely agree) in it, but it's simply an excellent veteran's best guess as to how HD works.