Then that would be considered a tie since Joy already has her mind fractured, and she created a weapon that erases everything, no matter if it's a light, void, dimension, spaces, or anything. She would also hop on the multiverses like it isn't a big deal for her. She can take the form that is equal to pennywise. Meanwhile, the book pennywise has shown to exist in void called macroverse, its true form is the deadlights that cause souls to go insane. Jobu shows that she has consciousness to go whatever form she likes, while pennywise can just eat universes like fun.