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?
Following you with you opinion, there's no achievement if a gambler will not be successful, I don't know how you can become a legend if you ain't able to get something out from your gambling activities, you need to be good for you to be called a legend.