Originally posted by Astek
hey today im going to release how to duplicate your league best on black ops 2, Ive known how to do this for awhile now but im not planning on playing this game to much anymore( nonhost aimbot
) so i thought i would make a post explaining how to do it. Im aware that a tutorial has been posted in the past on this but that way is alot harder as you need to have the account your doing the duplication from on your playstation, two controllers and disconnecting your internet connection etc, so anyway lets get into the tutorial!
Firstly, you need to fresh start your account then change your name(with any RTM tool) to the persons name of the rank you want.
After that, you will want to press the PSN Button and sign out but dont quit the game, once your at the main menu your going to want to spam the "change name" button on the tool and spam the "X" button while hovering over "play online" keep clicking those two buttons intill you've signed in and you're now sitting in a party, as you will notice your name will be the name you changed it to.
And you will see that you have their league best, showcase, emblem and callingcard. Then your going to want to sign out again from the PSN Button, not quitting the game.
Lastly, your simply going to sign in again without changing your name and you will have their league best 
Notes:
yes you clearly need a CFW to preform this duplication.
you cant do this on an account that already has a league best,
on that note you can dup a rank over another dupped rank :p
you also get their emblem, showcase etc. i guess you can use this as i way of stealing emblems off people who dont have screenshots.
ive never failed to do this duplication and i have done it over 200 times (its super easy)
clearly works with any rank and any division.
There is a way that sound quit similar to this one that don't require a CFW to perform. My friend used to do it on my accounts and in return I edited his stats. I don't know exactly how he did it tho cus he never wanted to tell me. But I know it was with removing the ethernet cable and shit