It only goes to 70 on both systems.
level 70 10th prestige
No more Mw2 Challenge Lobbies on Ps3 because of the new Ps3 Patch.
Reach level 70 10 time's and each Time prestige
Reach level 70 and it magically appears in your list of weapons.
get to level 70, then go on barracks and it'll say prestige mode, click on it
Complete the mission in Act III called "Contingency" on any level.
This title can be obtained by Reaching 1st Prestige Level 69
Yes
you cant
No it is not.
if u have ps3 add ownupwnu69 for mw2
Yes. (almost as good as the XBOX 360's mw2)