I wonder what they meant by they don't want to make it more effective
"at least in the front"
I think it means that they don't want the t34 penetrating the panzer 4's front armor easily. So maybe they will make it so the t34 can gain an advantage from getting to the sides and rear, but right now the damage of the t34 and panzer 4 are so different that it doesn't matter where the t34 is, it's going to lose.