I think you can win in gambling or be a legend in gambling but you can't success in gambling because it is a game not a life achievement.
How can someone become a legend in gambling if he's not going to become succesful with it?
if someone becomes successful in gambling, is it an achievement or not?
If I can make millions in gambling, I can consider myself successful, true it's just a game but you can make big money here, and that's a big success we all wanting to achieve.
Few people can success in gambling because people who are play gambling even their money is small but once they hit the jackpot like millions of dollars they are successful. I think it is achievement because you can now buy what ever you want because you have a lot of money.