1. The typical RJ smiley face we see has curves for eyes; in the final sequence of S6Ep1, the smiley painted on Lisbon's face has vertical strokes for eyes (and a further episode which showed the same vertical strokes on the cryptic post-it note when Patrick Jane went to look for the therapist whom RJ consulted and apparently killed).
2. It is not clear why Brett Partridge was targetted. He may or may not be dead.
3. The sudden change in the smiley face suggests that the real RJ was unable to perform the all-important finishing touch to every killing he carries out. It would have been an RJ accomplice. So RJ is either maimed or killed --- much like the state of Brett Partridge as Lisbon found him.
4. This is one of the 'unbeatable' ways for RJ to beat Patrick Jane i.e. Patrick Jane never gets to exact revenge on RJ or Brett Partridge. On top of that, RJ would have taken Patrick Jane on a chase that even a dead RJ could do.
5. Patrick Jane while similar to RJ has more humanity in him and missed the crucial clue to the difference in the smiley face's eyes because he was quick to get the blood off Lisbon's face to reduce trauma to her/himself.
6. As an aside, I think that Patrick Jane could have ended up like Bob Kirkland as a poisoned person who was hunting down RJ and became a menace himself. Especially since we are taken through so many of Patrick Jane's high-functioning sociopathic ways. Through the development of his relationship with Lisbon, ultimately he becomes someone capable of redemption, and sees beyond the compelling but futile road to revenge.
7. Looking forward to mulling over more episodes!