Wouldn't offloads and tackle breaks also be a good indicator of impact and contribution for middle forwards? 6 of the top 10 offloaders this year are middle forwards and of the top 20 tackle breaks that are forwards, 8 play in the middle so it's certainly not exclusive to edge forwards. If we compare Scott's and Watmough's game changer stats, Scott has more offloads (24 vs 13) and more tackle breaks (13 vs 9). This is in spite of the fact he has run 70 less times. Seems to me that Watmough's attack was very one dimensional, although he was good at that third or fourth tackle hit up. However, a metre eater is much easier to replace than someone that can offload effectively and bust tackles IMO.