Power rankings system devised and compiled weekly by Stemshul. “Expert” analysis by paradroid. One of the biggest risers this week was the now #11 Dallas Mavericks, up 6 spots. They actually got off to a quick start this year. After getting to 9-4 under new coach Jason Kidd, who won a title in Dallas in 2011, the Mavs began to struggle, falling to 12-13.…