High ranking? The guy quoted by Coin_trader is just a Sr. member who made his account a year ago. Barely an experienced member if you ask me and judging by many of his generic posts focused on campaign post farming.

That said, a lot of these threads like OP's are impossible to verify. Sure, he won and got paid, but it's very hard to verify if there was a connection between him and the casino. Let's say you run a company and ask your friend to play there for free until you win something, then share the details of that win on bitcointalk and some time later, when people forget about it, send the money back to you. 
Free advertising