The problem isn’t resets. Neither alliance at this level has the power to consistently reset. Our bench depth isn’t great. This is compounded by the scaling nature of the game as I will explain.
My reasoning for the premise you disagree with is that there is a scaling mechanism in this game when it comes to attack and defence. If I improve my attack stat by 10% then it will boost my actual damage by about 13.07%
To my knowledge defence is the same. I haven’t seen anything that suggest team power is a scaling mechanism. At least when i am levelling up my heroes the team power seems to go up linearly. I could be completely wrong here and I would hold my hands up to that.
Here is the post where I got values from and to my knowledge it is still the same.