Absolutely Acorn, any type of contact sport such as Aflw, Nrlw etc has always had size and power differences within teams, as it's a necessary part of the games. Even Netball has quite vast size differences which help offence and defence. To expect every player to be clones of each other due to fear of imbalance in contact situations is stupidity.
The Nrlw origing is on telly tonight so that will be a great example of different positions require different physical abilities.
