first of all, let me tell you how I came to this conclusion.
I was facing min/maxers for a long time, and I was almost ok with it.
But last night, it was terrible, I don’t know how to describe it, I couldn’t get to division one with my balanced team’s 
. every event before this I was getting enough points to be in top 500 with Balanced team’s, it was good, you know facing min/maxers once every 4/5 matches it’s Ok.
last night I literally faced every kind of minmaxing and honestly when I take a look at their profile, hero’s star’s, levels, hero skill levels, I realized how smart they are, Well done, Bravo 
When I start to play PvP tournament, I set up a support team around Jarek (5*) and Hideo (6*), I looked at it and I said hmmmm, Mandrake will do great in this team, Ohh crap, my Mandrake is 9*, I can’t use him here, It’s not fair.
Then I realized what it’s more unfair and that is you try to play with balanced team’s, then you get destroyed by unbalanced team(s).
Basically you want to play the game as it meant to be played, well it’s not working anymore.
I paired my Mauler (10* plat) with Jarek (5*plat) along with 3 gold low skill level supporters, I jumped from unranked to top 500 in less than 10 minutes, quick kill, Perfect.
then I just stopped playing PvP.
That’s why Im suggesting you to do minmaxing.
it is so unfortunate. But believe me, playing the game as it meant to be played, it will not help you.
