Mei low diff.
-Hidden Mist makes it impossible to tell where they are.
-Futton is used. Mei cannot be affect by it as already shown, while Sakura will melt the same way Sasuke's Susano did, albeit on much greater speeds.
-Lava can be shot at the ground to act as a mine field. Mei has shown to be invulnerable to the effects of her own Lava, thus she steps on it all she likes, while a single step on Sakura's side will be extremely damaging and give away her location.
Pretty much all there is to it in this and Tsunade's situations... Katsuyu's acid will not effect Mei.
-Hidden Mist makes it impossible to tell where they are.
-Futton is used. Mei cannot be affect by it as already shown, while Sakura will melt the same way Sasuke's Susano did, albeit on much greater speeds.
-Lava can be shot at the ground to act as a mine field. Mei has shown to be invulnerable to the effects of her own Lava, thus she steps on it all she likes, while a single step on Sakura's side will be extremely damaging and give away her location.
Pretty much all there is to it in this and Tsunade's situations... Katsuyu's acid will not effect Mei.