The proof are in the PMs here. How much BTC have you dealt with him?
In total? Dunno 15-25? Maybe more, but definitely not less. And why should that matter? I know for a fact that mLiberty won a lot and lost a lot too. And I bet that it was a lot more then you won / lost in the Casino. He never accused him of scamming, because mLiberty knows that he doesn't do that.
Anyway, scam accusations belong in an other sub-forum and not here. So please create a topic over there.