Ok so I started playing mw2 about a month ago and I got pretty good, I love playing it. Then all of my progress has been deleted because I was playing as a guest on my brothers xbox the entire time. I think that I will just play call of duty on my wii from now on so my questions are.

~Is playing call of duty on the wii better or worse then on an xbox?

~Would there have been any steps that I could have taken to save my progress not as a guest?

~Is playing call of duty harder or easier on the wii then a xbox? (Example is the gameplay diffrent?)