the possession catch is good for possession receivers. did you play 09? remember how when you did a user catch it would say USER CATCH, well also in 09, i dont know if you noticed, when you did a possession catch it would say POSSESSION CATCH.
the same animation is in 10, even though it doesn't say anything when you do it.
basically, all you do is put your receiver on a fade route along the sideline, and when he is about 10-15 yards up the field, you throw him a bullet pass to the outside, and then click on to the receiver and move the joystick to the inside while pressing triangle (or Y if youre xbox).
your receiver won't stop running like he does in an RC and he will go get the pass while its up in the air and kind of early so that the defense doesnt get a chance at the ball and sometimes they dont even get a chance to tackle, either.
its much better than an RC, i find it much easier and more successful.