I really don't understand your concerns. To avoid confusing you further, maybe we should change the name of this thread to "Friendly Match"? If needed, I can easily do that. Please don't think that we are organizing a tournament and will be awarding prizes to each other. It's just a clan vs. clan game, nothing epochal. And if we talk about other tournaments, I think they don't interfere with each other.
All of this will greatly confuse the ranking system, and it should be one for the entire HeroesWorld, just as there should be a single tournament schedule.
There should be uniform rules for tournaments and clan matches.
That's the problem! HeroesWorld is