You cannot prove any of this as there is nothing to prove. I think I have won 4 or 5 rings now, it's not difficult to follow the strategy outlined by the devs as long as yoou have reasonable cards. Track lineups of people you've hit in a note pad, set your cards to bet them next time. You soon learn who to avoid hitting.
It is easy to assume people are cheating because they are doing better than you think they should - simply because they know how to play properly. You and your guild members confessed to cheating in global. It's pretty clear that you are still trying to distract attention from this.
You are correct - the devs say dropping cards or using alts to scout etc is cheating - we knew this all along. Meantime you and your members confessed to such activities in global which is why it was raised with the devs again.
No more lies and accusations please.