Dave Brown was the greatest player of all time IMO.
Since pretty much none of us are truly able to claim to have watched any of the greats from the most of the 70s and earlier (unless we have some pensioner posters 8) ) I can only go on stats and stories.
On that basis...
Dave Brown is the most prolific try scorer of all time, captained several premierships, scored and incredible amount of points in a season and was one of the youngest captains of Australia EVER. Thats the stats.
As for the stories.... He is granted the title of the Bradman of League. Surely the greatest compliment that can be paid to anyone.
Nuff said.