I've harped on it a bit, but I genuinely believe that it is a behind the scenes directive from the NRL rather than something the refs are doing individually. I feel the reffing has changed since the 6 agains caused massive blowouts and a lop-sided comp. I find I can predict to the tackle when the momentum shifting 4th tackle penalty followed by a late six again call comes after one team develops an early lead.
You guys are going to have a hard time convincing me I'm delusional! It has created a nice even comp. I don't believe the refs cheat, but I do believe they have a playbook they have to abide by. I think the current environment in the NRL (possible directives, bunkers) make the refs look a lot worse than they are.