When do you ever see Nords on the same team as Byz, Greys, Druzina, Mercs and Fallen and whatever other active clans? Theres usually a few active clans on and they very rarely play on the same side as each other. If they are its because theres some other big active clans on the other team. Its usually Nords vs Byz or Mervs vs Greys or whatever. Getting rolled in those instances is to do with team confidence and tactics. If your team loses 2 in a row their morale gets recked, the other team senses that they are stronger and it snowballs.
You see people doing the same tactics over and over even when it fails 3 in a row. You see people charging into the open when they have weaker cav. Charging ranged when you have flag spawn areas. Thinking you can't lose because you have more players and then the other team clutches. Without clans playing together these instances will be 10x worse. Winning will come down to luck. Most clans don't have all their players at the same skill level. They will have some monster players and some average. Without clans playing together the truly best players in the mod will end up on the same team as each other. You will get Chase with Saxon or Qoray with Phase or all together. The game will try to balance but it won't see how each player multiplies the effectiveness of the other. Some people can just coast through a round and then switch themselves on during clutch situations and perform outside their abilities. The autobalancer is never going to be able to account for everything and the bad players will be really at the mercy of the balancer when they have no team cohesion and less teamwork than now