I don't know about demulshooter, but ts2 fully supports dual joysticks. I wrote it specifically for that purpose as wiimotes work best when setup as joysticks, not mice. I tested gunblade support in particular almost exclusively on my xbox 360 gamepad.
So download it and give it a try. Just keep in mind that the current release build doesn't support the latest version of m2emu, so you'll have to go back one version.