The Phoenix Force at full power is one of the few cosmic entities that can match and potentially exceed Galactus.
This is a clash between two of Marvel's most powerful cosmic entities. Galactus is the Devourer of Worlds who wields the Power Cosmic, while the Phoenix Force is the cosmic entity of life, death, and rebirth โ a fundamental force of the universe that has existed since the dawn of creation.
At full power, the Phoenix Force is considered one of the most powerful entities in Marvel, capable of destroying and recreating entire timelines. The White Phoenix of the Crown โ the Phoenix at its absolute peak โ operates at a level that exceeds even a well-fed Galactus. It has consumed entire stars and reshaped reality on a multiversal scale.
However, the Phoenix Force's power varies enormously depending on its host. Jean Grey wielding a fraction of the Phoenix is far less dangerous than the full unbounded entity. Galactus at full power is more consistent and has fought the Phoenix before. This matchup heavily depends on which versions are fighting.
Galactus at full power has fought cosmic entities including the Phoenix and survived. The Power Cosmic gives him reality manipulation and energy projection on a universal scale, and his experience fighting cosmic beings is unmatched.
The Phoenix Force at full power is a fundamental cosmic entity of creation and destruction. The White Phoenix of the Crown can reshape multiversal reality and has power that exceeds virtually every other entity in Marvel.
The full Phoenix Force edges out Galactus through its status as a fundamental force of creation and destruction. A weakened Phoenix or fragment loses to a well-fed Galactus, making this extremely version-dependent.
Galactus also fights
Phoenix also fights