Why does 6.7 ALWAYS get full uptiers

So today i have played abt 13 matches at 6.7 ground and have had 11 full uptiers with the rest being 7.3 matches, WTH gaijin surely there is enough 6.7 players to not have constant uptiers.

Also this is also a request for help and how to avoid things like these.

What nation? Also I’ve spent so much time playing 6.7 US and I pretty rarely get uptiers

there are not many 7.3 machines, so when the balance machine needs to put them in the game, they have better chance of being downtiered. So as why you meet them much

Because 6.7 is more popular than 5.7 and 7.7 when you’re playing.