Q:

Why didn't the Doctor become a vengeful God when he absorbed the Time Vortex?

In season 1 episode 13 of the rebooted Doctor Who, The Parting of the Ways, Rose Tyler looks into the Heart of the Tardis and...

becomes the Bad Wolf entity.

This makes her effectively a Goddess, with the power to transcend space and time scattering messages through it, and destroy things by dividing their very atoms. In this question, it's made clear that a Doctor possessed in the same way would be far more powerful a creature:

Doctor: [Rose] came back. Opened the heart of the Tardis and absorbed the time vortex itself.
Jack: What does that mean, exactly?
Doctor: No one's ever meant to have that power. If a Time Lord did that, he'd become a god. A vengeful god. But she was human.
[...]
Doctor: Everything she did was so human. She brought you back to life but she couldn't control it.
Doctor Who Series 3 Episode 11: "Utopia"

This quote and the answer it comes from seems to imply the Doctor has never been possessed by the Space-Time Vortex, although this is untrue. 
Minutes after Rose creates the Bad Wolf entity by looking into the Heart of the Tardis, the Doctor saves her by kissing her in order to absorb the Vortex himself - an act which would go on to destroy his current incarnation - before channelling it back into the Tardis. For this brief moment, the Doctor possessed all the power of the Vortex inside of him, even though the quote from the Tenth Doctor in Utopia claims this has never happened. 
Why does the Tenth Doctor claim that something like this has never happened?
When it did happen, why wasn't the Ninth Doctor transformed into the God-like, vengeful entity that the Tenth Doctor claims? Why was he able to simply control its urge and pass it through himself?

A:

The 9th Doctor didn't become a vengeful God because the Time Vortex literally killed him (meaning, the situation wasn't similar to that of Rose; he didn't possess the Time Vortex like Rose did). He didn't return the Time Vortex to the TARDIS by choice. His cells started to die once he possessed the Time Vortex, so even if he wanted to be a God, he couldn't. If he would not have returned the Time Vortex to the TARDIS, he would have died permanently (death during regeneration or loss of all regeneration energy).
What he meant by “If a Time Lord did that, he'd become a God. A vengeful God.”: If a Time Lord could possess that power the way Rose did, he would become a vengeful God. Rose obviously truly possessed the Time Vortex for the time as she didn't die. Once I asked about this:
Why didn't Rose Tyler die after possessing Time Vortex?
For whatever reason Rose didn't die (let's say TARDIS protected her), if that applies to a Time Lord, he would become a vengeful God. Obviously, that really didn't apply to the 9th Doctor as he was killed by the Time Vortex.

