The H.A.M.M.E.R. tough guys were each making their own calculations. They did not ask about the enemy, and Daisy did not tell them, because there was no point. Was she supposed to tell Venom that Fire Lord's flames were millions of degrees hot? Or tell Bullseye that Tyrant possessed the strength of several thousand tons?
To these tough guys, there was little difference between a few million degrees and ten thousand degrees. Either way, one hit would kill them instantly. Talking about millions of degrees was pure fantasy.
Captain Marvel went to absorb energy from a nearby star to ease her injuries. After putting on a show, Daisy returned to normal as well. Her injuries were not serious. She kissed Wanda's little mouth, drank a bottle of so-called love potion, and returned to Earth ahead of the others.
Galactus's strength had to be assessed at a higher level. The current superheroes alone were probably still no match for him.
While numbers could overwhelm quality once they reached a certain level, the combined forces of the Avengers, X-Men, and H.A.M.M.E.R. were not so countless that they stretched beyond the horizon. They did not possess a numerical advantage.
By merging with Jean, using Jean as the host while adding Daisy's psychic power, life force, and vastly superior realm, they could fuse into a special form that completely controlled the Phoenix Force: the White Phoenix. If the two of them further harmonized their thoughts and Jean completely opened her inner world to Daisy, they could even become the White Phoenix King.
This was the highest level the Phoenix Force in the material realm could contain. In theory, it could reach the ceiling of a single universe, but it was easy to lose control. Perhaps even if they defeated Galactus, they would lose themselves