Originally posted by KutuluGalactus's blasts did make him more powerful though.
No, both Galactus and Tyrant were blasting the hell out of each other when Tyrant was still full powered. I believe the incident you are thinking of is when depowered Tyrant confronted Galactus on his worldship, and Tyrant took control of the ship and began to suck the life force out of Galactus with it.
In the fight we are talking about Galactus blasted him but it powered up Tyrant and then he tried using his ship against Tyrant but technology bends to his will so he used that against Galactus as well.