Sorry, the analysis seemed rather clear. Offering people a chance to fight arena-style fights against their fellows is rather unscrupulous to say the least. Do you defend doing this?
Taking down the site and apologizing seems like a pretty clear guidance to ending the problem. What else would you suggest?
Does your reading of the bible or religious texts support sites like 'cubeduel'?
The point is also don't judge unless you want to expose yourself to judgment. I don't mind being judged for condemning this 'cubeduel'. Who wants to judged for supporting it?
One has an obligation to speak out against despicable acts. Do you think this is something other than that?