Well it appears, from what I've seen, that snooker players have the edge over "American Pool" players at Chinese 8 ball, but the pool players have the edge over the snooker players when they enter American Pool competitions (with regulation, I.e not so tight, pockets). I think it's reasonable to assume here that they have limited pre-tournament practice at the games they don't usually play. Yes, C8B pockets are cut differently compared to "tight" American Pool pockets but both "play tight" and make an expansive game with a wider range of shots more challenging.
Anecdotally, it's my experience at the recreational level.of the game that good players who are super solid (and come from a snooker or E8B background) make gains on tight or difficult tables against those who put the hours in at the pool hall on regulation tables - but struggle in a race against those same players when the pockets are looser and allow a more knowledgeable player to run out the more difficult patterns more often
I think it also depends on a player's mindset.
Anecdotally, it's my experience at the recreational level.of the game that good players who are super solid (and come from a snooker or E8B background) make gains on tight or difficult tables against those who put the hours in at the pool hall on regulation tables - but struggle in a race against those same players when the pockets are looser and allow a more knowledgeable player to run out the more difficult patterns more often
I think it also depends on a player's mindset.