I'd encourage everyone to dive into the Fox Sports Lab if you haven't already. You might notice some differences with the stats on the NRL website but they are minimal. The lab is also more comprehensive than what is on NRL.com.
Some golden rules for those who haven't heard them before:
1.) Stats are volatile when dealing with low volume (Its round 21 so shouldn't be a huge problem)
2.) Stats are important but don't replace the eye test (And vice versa)
When used appropriately it can generate a lot of great discussion. You might need to do some pruning as this data set isn't so reliable when filtering by position (For example Tom T is listed as a centre despite playing only one game there this season):
Players Statistics Table for NRL Premiership
www.foxsports.com.au
Its not perfect but its the best I've found available to fans. I'd love to see what data the Penrith Panthers collect in-house (The guy in the coaches box with the laptop would be my guess).