Its nice of winner guy to promise to pay the full sum even with his sudden but inevitable betrayal. Like Mo, He shows an understanding that needlessly making enemies will lead to many knives aiming for his throat.
It's actually refreshing how quickly this got resolved. I'm a little tired of stories that could be resolved if people just hashed things out but they never do.
Mo seems to have the right of it here. "Lets not be dicks to people we are going to see again later." That alone puts him head and shoulders above the average Xian.