I have watched videos of other people fighting the wither in survival on different devices and I have yet to see the wither as difficult on Pocket Edition then every other version. I had full netherite protection 4 armor and golden apples and still died to the wither because of 30 seconds of wither 2 effect. It is impossible to survive that unless you have a lot of totems but raids were nerfed. I can't fight the wither till that is fixed.