I don't think so that there's a trick in esports betting. I'm always betting in underdog team, that can go along with the game play of the other team. Why? Because I like to take the greater risk to get high return.
Same ideology, I prefer risking on lower odds than higher because of the high return that I can get. Of course, having research is a must, If I see the potential on the underdogs I will trust it and hoping they will win the game.
There are too many games that make an upset by defeating by underdogs and sometimes underdogs win the whole tournament. For example the TNC on WESG 2018 tournament, TNC got the biggest upset on the whole Dota 2 tournaments.