The winnings posted by you I don't think its true, even if it is only one user out of millions would get that if he is extremely lucky.
I guess you are new to the gambling world. Go research the name "Archie Karas" and you will learn that this win is nothing compared to what he achieved. Its not impossible, but very, very difficult.
WOW! I become encouraged when I see the big win photos on the gambling forums, social media. My friends also prefer old-school gambling, they all think what I do in the gambling sites is a waste of time. Due to the scam sites, the trust level is at its worst level but the fair casinos will recover this sooner or later.
This is the problem people. Don't get encouraged by these big wins since they are basically rare to begin with. Invest only what you are willing to lose. Don't blindly pour all your money into these sites and regret it later on just because you observed others win this way.