Does low elo victory in the new season depend strongly on which team has 3 tanks/bruisers?

I looked through all my wins and losses today and most of the time, the team with the 3 tanks/bruisers wins.

I got fed as Morde in a number of those games but still lost because they had “too much HP” for my team to chew through. So then when the game got late, they had WAY MORE flexibility to take and start fights.

Is there something to this?

I’m starting to think that if you could be 100 percent be matched into 3 bruiser/tank games all the time… almost any player (unless trolling) will suddenly start winning at least 40-50 percent more games.