Noxxic's talent build and rotation are suboptimal at best, though the stat weights are fairly accurate. I've never seen good information on there since the site launched.
There are a couple theorycrafting threads on the official forums in the tanking role forum. Here's the most comprehensive one for sin/shadow
Also I'd suggest watching mmo-mechanics.com/swtor/forums for when they update their compendiums for 2.0.