System of choosing opponent in ToPK

I don´t know if this doesn´t belong to Q&A, so I apologize if so. I have tried searching but without any relevant finds.
I wonder how does the system of choosing opponent in Tombs work. Some of my guildmates noticed that when they are playing with random Pugs, they always encoutered some easy random teams. But when we play as guild we encouter always high ranked guild or teams.
So I am guessing that it is chosen by some calculation from ranks of the players (we all are 3 and higher) ? Because it can´t be totally random. These differences between pickup groups and guild group are noticable always not just sometimes.

i doubt it. back when the Legion of Gallantry was conquering the Hall every 20 minutes, i ran into them when i was in a PUG. they ran us over in under 20 seconds. then again, it was the only time i ever saw them...but at the same time i'm not too crazy about tombs either, and by the time i got into the craze the Legion had dissapeared from the standings.

i doubt that it's really calculated like that, just luck of the draw....as always.

Some days it's bad luck (and lots of good guilds running tombs) and on other days it's good luck. Today I fought TWG and Ward against Noobz in two concurrent runs (cool fight against Wa on a relic map, I even appreciate losses on that occasion because you can learn and it was kind of close) and some weeks ago I went to HoH stomping over 4 bad PUGs and a non-ranked guild until finally meeting a good guild in Zodiac Braves in the Hall itself.

I don't think there's a mechanism, the system just takes whatever teams are available at the moment and groups them up. Of course it tracks wins and advancement in the tournament "tree" but other than that it's pretty random.

Even fought you guys (PUG - Pilsner Urquell) today - hopefully we are not what you consider a top-ranked guild (after watching several of them play, I know where we belong to )

Thanks for your replies, I am calmer now However it is always frustrating to end in the first or second battle after some good runs, you start to think what is different from other days

Yesterday it was bad day, we have tried the popular smitting build (2xW, 2x E/Mo) which we usually don´t play (and probably won´t play) but without much success (might be because we have encountered Plop and other high-ranked guild)