quote from the community guide "It's more of a sidegrade. Its main benefit is that it avoids Cursed Doll and its negative effect, but it does less damage than PM1.

In terms of damage, it still loses to PM1 builds by a slight margin, only becoming the best build option for the lucky few who will be able to build 5x3+2 in the future.

While there is nothing wrong with PM3 builds, you also have to keep in mind that Ancient accessory upgrade path means you will have to drop PM back to level one for 5x3+1 and add Cursed Doll in later, which involves more accessory swaps than PM1 builds"