I can’t say I’ve ever done any testing comparing plywood to Tectum in hurricane conditions, and I’m not aware of anyone else’s studies. With that said I will say that Tectum is basically a cement coated wood fiber, that would certainly allow air to pass through it much easier than plywood. So with regard to the tectum being better to relieve interior negative or positive pressure, I would say that it would be better than plywood. HOWEVER, the roof membrane you install over the tectum will likely make this a moot point, though it is certainly possible to lose the roofing system and not the roof deck in a hurricane. So in the end, I don’t know that it makes a difference, but it could. Then again, understand that most roof systems installed over Tectum utilize a tube-lock or similar fastener, which typically causes damage to the Tectum when removed. If there is also water damage, it may be prudent to replace the Tectum regardless which one withstands hurricane force winds better.
If you decide to go the plywood route, you may want to check out the option of using Densdeck instead of plywood.