Board Game Arena

The tournament was fun and I don't overvalue trophies - yet I don't understand why I was ranked 3rd at the end and would like to understand the tournament ranking rule in Swiss system in a 1-on-1 game.
Here's the tournament: https://boardgamearena.com/tournament?id=132190
I got 3rd, but had the same score than 2 other players.
I even won directly against both, this seems to be no aspect.
Then I thought it has to do with the ELO ranking, so that players with fewer ELO might be ranked higher in overall tie, but this does not work for the other 2 either.
So what is the rule for the tournament engine to determine ranks here, just random?

Click the + where it shows Players and Points and Played. ​ ​ ​ That brings up
Opponent's points ​ and ​ Opponents' average , ​ which I infer are the tiebreakers.

for what it's worth: ​ ​ ​ ​ ​ ​ ​ For 2-player-game tournaments, when everyone relevant has played the same number
of games, I agree with ​ Opponent's points ​ being the primary tiebreaker. ​ ​ ​ However, when additionally everyone
still in the tie has the same number of head-to-head games, I think head-to-head should be the next tiebreaker.

(On the other hand, head-to-head coming next would not have made a difference for
the top 3 in the tournament you linked, since you come in 3rd on ​ Opponent's points
and then SeanV has the head-to-head against AFM90.)

Ok, thanks, didn't see that.