The Arcade doesn't play Xbox games unless you add a HDD to it.
Regarding cables:
If you're going to use HDMI the Arcade and Pro are the same, none of them include HDMI cables (which are very cheap anyway).
If you're going to use component cables (better than composite, but could conflict with the Wii if your TV only has one set of component inputs and you're using it for the Wii), the Pro already has the cables while the Arcade doesn't. I'm not sure how much these cost for the 360.
My Mario Kart Wii friend code: 2707-1866-0957







