Power Cosmic II
BigG > Mad Celestial Host
Tyrant was created by Ron Marz (and ron lim). Marz wrote both the first appearance with Tyrant and the huge battle in cosmic powers.
Mark Lackey came on later and wrote the second conflict.
When Galactus confronted DP he clearly stated that while he was withdrawing, he was going to engage Tyrant on his terms and at a time of his choosing. Both acknowledged that the outcome of their conflict would have undesirable collateral effects. Marz went to great lengths to portray them as begrudgingly respectful.
Marz then depicted their earlier conflict which shattered galaxies, etc.
After this marz has nothing more to do with the character. At this point, Lackey steps in. Same writer who has Morg's English sound like some street thug that spider-man should be taking care of. Tyrant being able to absorb G's blasts was something marz, the character's creator, never intended nor hinted at in any fashion.
Yes, DP Tyrant beat Galactus. But it's not "believable" in the sense that Marz established precedent because nothing Marz depicted Tyrant capable of doing carried over into Lackey's portrayal. Or in other words, Lackey made up capabilities that Marz never intended the character to have (technopathy, absorbing G's blasts when that clearly wasn't the case when Tyrant was defeated by G at a much more powerful form with G using his blasts).
It would be more "believable" if during G's first encounter with DP Tyrant, Marz had wrote something along the lines of Galactus sensing Tyrant had acquired new knowledge/powers that heretofore were never known to Galactus. If he had put that in and just left it at that, Lackey's subsequent portrayal would be 10x better.
It's like superman beating wonder-woman in round 1,
encountering each other at a later time and agreeing not to come to blows,
then in round 2 diana suddenly has the power to radiate kryptonite, which Superman conveniently was unaware of.
happened, yeah. but not believable.
Personally, the height of it being unbelievably stupid is that Tyrant is to Galactus what Thor is to Odin, a "son" of sorts. Except Galactus literally made Tyrant.
Why would G ever allow a creation of his the ability to absorb his own attacks? It would be like Odin placing a blessing on Thor that anytime Odin blasted thor in chastisement, Thor would just re-channel it back.
It's canon, but that doesn't mean I have to accept it as "making sense"