Seems strange but barbox and snooker are closer to each other than barbox and nine foot table. Some of the people known as barbox specialists have tough snooker games too.
I can't make up my mind about which better shows skills, tourney format or gambling. I like the variety of players in tourney play, I don't like the short races. In gambling I like that they play until somebody runs out of money or quits, I don't think it does much to rank overall skills unless you look at results over years.
While they take a long time to play, I think some of the old time round robins and snooker tourneys might be the best to show skill. I think eighteen games of snooker definitely settles who is best at the present time.
I don't have answers because time is the issue. Nobody has the time to play that long and if they did I don't think spectators would watch.
Hu