Because the crimson witch gains the power of chaos, which is second only to phoenix force in the Marvel universe, and can even compete with infinite gems. Once in Reunion 3, the crimson witch destroyed the spiritual gem of illusion with her own strength! In Reunion 4, the power of the crimson witch is completely released. If it weren't for the protagonist, the strength of the crimson witch can basically tear Thanos with her bare hands! The Supreme Mage is also very powerful, but most of his strength comes from the eye of his Argo motorcycle, and this treasure is also a time gem in the Marvel universe. In his personal film, Doctor Strange defeated Dommam with the power of time gem, and later in Reunion 3, he also showed the great power of Doctor Strange.

On the whole, the crimson witch is more powerful.