Sullinger has been excellent this year, and many of us who were counting him out as out of the rotation should be eating crow right now.
For me, I'm just still not sure if he's a better fit and a better long-term option than KO. I really don't think we can keep both long-term, and it seems that KO is a better fit for our style of play, healthier and less injury-prone, and is making more strides both offensively and defensively right now. The only major difference is rebounding and low-post offense, but it seems that KO is starting to separate himself from Sully by his versatility alone.