The whole thing was pathetic, and nto much point in getting psyched about it since this alignment change from evil to good is a result of the spell used to defeat Red Onslaught which may have also brought Xavier's mind back to the forefront and shut down the Skull.
Eventually it will be reversed and the status quo restored.
I mean seriously, an arrogant killer like Kinglsey and a psychopath like Carnage converting to heroism? Feh.
Ugly artwork and lame story.
They did the same thing to the Leader, a guy who destroyed an entire town with a Gamma Bomb, killing hundreds. However, I can see this working on a character like Sandman (Again.), or the Hydro-Man, or the Shocker, less bloodthirsty villains.