When you say "working," do you mean that it flat out doesn't do anything, or do you mean the controls act funny? Most people complain that Sonic Unleashed doesn't have proper controls when they use GamePad.
I did yes, no luck from that either
I also went ahead and tried out Fortune Street and that game also gets zero input from the gamepad controller despite me setting the settings to make the Gamepad Emulate a Horizontal Wii Remote
These were the settings I used for Fortune Street (settings are pretty much the same for Unleashed minus the controls being Classic Controller and the base being Xenobloade and having a GCT file added)