Not surprising they give him double up runs when he comes on so that is logical.
Key Stat is what happens to our ruck..I worry when our replacements come on, in the early pre Mannering rounds (not actually blaming him ) we went up a gear...of late my honest impression is that we lose a step or three when the bench comes on...not Mannerings fault...rather the configuration...the game plan...that relies on him as a frequent hit up artist....the guy is a super tacklebot...we need runners in his stead in that bench impact role.
i had been noticing the same thing. When we had Ligi Sao coming on, the impact seemed to be still there, and also Lisone was going ok in the early rounds. Now, it seems theres no oomph as Gavet hasnt really got his levels up to where they need to be, and Sao is completely out of the rotation. (What did he do?)
Also, the defense doesnt seem to be as stout when Mannering comes on. Its almost as if subconsciously the other players are relaxing on defence because their best D guy has come on to take the load. When he wasnt playing at the start of the year, they didnt have that luxury and the defence seemed to be more consistent, (although still missing tackles, conceding penalties).
Thats my impression anyway.