Are we like living in a fucked-up post-scientific revolution phase of the dark ages? Cause no way in hell the catholic church would allow someone like him to be at one of the highest seat of power in the Christian Power Hierarchy and still be able to gamble like crazy, regardless if he's winning or losing. People are getting ousted for the littlest things in the Roman Catholic seats of powers, a few weeks ago a UK priest was kicked out of his convent and stripped of his title as a priest cause he misappropriated his church's funds for powerups in candy crush. And here we have an Archbishop that is eagerly playing their shit and is even getting banned in casinos because he wins so much. Weird times man.
Every religion has their own beliefs and so we don't know bout their beliefs towards gambling. After all, only humans are creating such religious sects and making their own rules. So if that leader is involving himself in gambling, then, it is up to his followers if they will believe his teachings or whatnot. And I don't think it has something to do with his "God" why he is winning. For sure, he has strategies on why he got those winnings. Most of them will just use the name of their God so they can continue doing what they want to do in life.