I think you and kiki are just reading way too much into this. Believe me if it was offensive to any Aboriginal we would've heard about it by now. It would be the same as someone playing in the NBA being called the White Michael Jordan. Racism, by definition, are derogatory comments used to oppress, belittle and offend a minority race of people by the domininant, power-wielding majority. Calling Chris Sandow the Aborginal Alfie is fine because, a) it isn't offending, belittling, or oppressing him, b) his ethinicity is obvious to everyone with eyes, amd c) he's being celebrated.
By the way, the fact they're not calling him the next Allan Langer but the Aboriginal Allan Langer is because they're saying he's on the same level as him, and not the fact that he's someone with the potential to become someone like him. Anyone that calls him that is giving him a massive compliment.