If you want both of them equally, and are basing your decision solely off which developer you should support, I would say get Call of Duty, for a couple of reasons:
1. The Wii now has no shortage of support from Japanese developers, as well as a decent amount of JRPGs. However, few Western devs are willing to take the chance on making a big, core-oriented Wii game, and there are surprisingly few FPS for this console that is tailor-made for them.
2. Call of Duty 5 looks awesome XD







