BJJ old scoring system

I was reading an interview with Cassio Cordosa and he was talking about he beat Marcelo Behring 6-2 old rules but it would have been 18-2 by new rules. What was the old scoring system? ANyone ever heard?

I heard there it was 4pts for mount/back with hooks and 2 or 3 for a pass. There was no points for sweeping.