Agree, Riewoldt gave everything he had to get to the next contest and gave everything he had to win every contest. He got better as he became more experienced and a bigger body but the effort remained the same. Luko doesn't put in a Riewoldt like effort.
It's funny that his name is Jack because he could be anything from Jack Watts to Jack Gunston.
Nick Riewoldt didn't debut until round 15 in his first year (in a Saints side that were just as bad, if not worse) and only played 6 games. Not saying Luko will be the next Riewoldt because he's one of the greatest CHFs to play the game, but a skinny, raw 18 year-old tall isn't going to set the world alight in his first 8 games.
You couldn't really expect Lukosius to do that much in his first year, at his size. i don't care how talented a player is, eighteen year olds of that size don't dominate right out of the gate. I don't think we can draw any realistic conclusion about how his career will progress from this point yet.