Although, I personally think Bristol is not an airport for long-haul. That is more likely Cardiff's job.
Welcome to the forum, bishbash.
It would be instructive if you were to give your reasons for this opinion.
I sometimes think of BRS and CWL in football terms. BRS gets the bigger crowds but CWL has the better ground (terminal building excepted).
As for New York, I thought it would have been a more instant success but there are signs that things might be beginning to improve. We have debated possible reasons for the slowish start to the route in this thread previously so I won't go over old ground.