Civilian courts are no different from military courts? Either I'm very confused, or you are. A number of key rights jump out when I hear that, rights that apply to criminals but not to warfighters. Things such as Miranda rights, trial by impartial jury, and trial held in the jurisdiction where the crime took place.
You do seem to have confused the differences between the military and civilian systems. For example:
First off, "miranda rights" do not apply to all criminals in the civilian system. You don't get mirandized if you are arrested in a foreign jurisdiction.
Trial by an impartial jury
is a requirement in the military system.
"Trial held in the jurisdiction where the crime took place" is not a requirement in either the military or civilian systems.
I cannot imagine a military trial allowing some ACLU or CAIR hack to turn the trial into a vehicle for attacking the United States. I can easily see it happening in a civilian trial, especially one as ill-conceived as this one must be. In fact, I have a hard time imagining the civilian trial to turn out any other way.
Okay, what is it that makes a civilian trial more amenable to this kind of monkeybusiness than a military court? In either, the defendants will get to give evidence. If it isn't relevant to the case, it won't be allowed in. If it is relevant, it will be. To be honest, attacks on the US in both will probably be allowed because they go directly to motive - where you see an unfair attack, I see a confession, which is fine by me. If they want to help prove the prosection's case, no court, military or civilian, will stop them.
Regardless, if there's no difference, I agai have to ask why they're bothering to yank KSM out of the military courts where he belongs and where he's been for many years, and shoe-horn him into the civilian system where his situation doesn't fit. If there's no difference, they wouldn't bother. The fact that they do bother tells me there is at least some substantive difference between the military courts and the civilian, enough of a difference to make this farce worthwhile to them in some way.
This is where you have gone wrong: they didn't yank KSM out of the military courts. He never was in that system. There was an administrative review system that was specially created for Guantanamo. That process was never used in any military proceeding in the history of the US, and was so constitutionally deficient by military standards it was never going to hold up to challenges.
If they had put KSM in the military courts, this would have been a done deal along time ago. But then he would've been able to stand before the military jury and present a defense, which the Bush administration did not want to allow.
It looks to me like the real disagreement here comes from a misunderstanding of the differences between the military and civilian systems. Looking at what a military court really provides, do you still support trials in the military system? If so, we're on the same page.