He means that what Carlton lack is that intimidating, hard type player that other teams are generally frightened by. Thus why he mentioned Brereton and Mooney.
This quote from the 'Why Does Carlton Draft Runts Rather than Talls?' thread got me thinking, we really don't have one, probably haven't since David Rhys-Jones
So apart from the obvious ones lilke Mooney for Geelong and Brown for Brisbane, who are your teams most intimidating, hard-man type players?