I've never used a closed bridge - can't see the point of them. It's just a fad that people have copied to look cool. How do you generate power with a closed bridge?
Anyway, as with all these pool Vs snooker debates, snooker every single time. It's no coincidence snooker players are light years ahead of pool players in every technical area of the game. I see a lot of top class pool players play, and wonder how they can be as good as they are. I'm not saying they're not very, very good, but they'd be a whole lot better if they started with snooker fundamentals at an early age.
Snooker players: top class thoroughbreds.
Pool players: the old adage 'a camel is a horse designed by committee' springs to mind.
Snooker cue vs a 14m shaft, what has more power? Some guys play with a 14.25 on a snooker table.