I'll start this by stating that I'm not any kind of Comanche expert. I just built a simpit cockpit for it.
As far as I'm aware there were only 3 launch rails on each side of the munitions storage doors. All others were carried on the detachable external hardpoints which basically destroyed your stealth capability.
I don't know where the Wiki got there information from though, so I may be wrong.
Cheers,
Andy