He is a kind of gamblers who prove that with good skills and strategies, gamblers can increase their chances to win....
Whether or not it is accepted as a norm, it is by default, an understanding that skills in gaming isn't to be relied on. We all know luck has a greater percentage of contribution towards one's success in gaming and gambling generally, but it will be out of contest to say that one is winning cos he has the skills. Even the best of skills, when subjected to the gambling space, is still subject to uncertainties.
The skills only aid you to play within certain confines and considerations but not to be successful in a game charaterized by luck