Depends on the version of madden you have.
2-4
The Xbox Arcade is an Xbox 360 and it comes without a hard drive. What you are calling an Xbox 360 I'm assuming comes with a hard drive and if you are thinking of buying an Xbox I recommend not buying the arcade as you cannot save games without a hard drive.
click the left analog stick
Yes you can. I have a Xbox 360 Arcade and it works the same as a normal Xbox 360. If you want to save your rank online you will have to buy a hard drive and put it in your arcade though.
Yes, you can play regular xbox 360 games on an arcade unit. The difference in between the arcade unit and the pro system is the pro system comes with a hard drive to save game data/videos/etc.
An xbox arcade IS an xbox 360, just without the hard drive.
Yes you can still save your games as long as you have the memory card inserted.
Arcade? Probably not.
Xbox Live Arcade was created in 2004.
the xbox 360 arcade can play the same games as the normal xbox 360
yes I've got an arcade and xbox live works fine
About two differences: one: the xbox three sixty has a harddrive two: the xbox arcade comes with free arcade games but doesnt have a hard drive