Why does the xbox 360 controller not work on rainbow 6 3 raven shield but works fine on far cry2?

Hola, disculpen, desearia que alguien me ayudase con el tom clancy's rainbow six 3 raven shield en multiplayer... ya que apesar que registre el producto no puedo ver la lista de partidas online, me pide crear una cuenta y el link para crearla presuntamente no existe dentro de la pagina de ubisoft...gracias por su ayuda

@ant: it doesn't work on Raven Shield because RvS wasn't a crappy console port. R63 on Xbox was actually a port of RvS.

Far Cry 2 PC is a crappy console port. That's why the 360 controller works with it.

because Raven Shield was released in 2003, several years before the XBOX360. the game was also not a console port

Far Cry 2 was released in 2008, at the same time as the console versions