They lowered the stealing objective after the patch, it was impossible before the patch and its even more impossible after it.
It is really tough to do after the patches, but I was able to do it with a pretty obnoxious strategy.
- obviously pick 2 players with a very high steal stat (high speed stat is huge also) and don't worry about actually winning the game at all. rondo and curry are great
- the easiest way to get a steal is to try to steal it from the computer right after they've stolen it from you. best place to try to do this is to when you have the ball take it to the top-right or top-left corner. stand there and let the computer steal it, then the moment they do try to steal it right back.
- using a push to steal the ball doesn't count, only use the steal button
- whenever they've gotten the ball over to your half and are trying to score it's pretty tough to steal it. once they're in your half just alternate running your players to the right side of the screen so they can quickly and easily score
- another time you can steal is right when they inbound it. if you don't get it on that pass or the subsequent one, again likely best play is to let them score quickly to get the ball back.