Am I reading this right?

[Waaaghpower]

In the new apocalypse book, gargantuan creatures are no longer immune to psychic powers that have no strength value. So could Jaws of the World Wolf really take a heirophant out or am I missing something?

[Kur'os]

They added a couple new rules to cover such cases:  Invincible Behemoth (vehicles) and Unstoppable (gargantuan creatures) respectively. 

Above rule negate any "auto-kill" or effects that removes models from the table, instead they merely loose d3 HP or wounds. 

-Kurocyn

[The Man They Call Jayne]

Have they changed out structure points for Hull Points now then?

[Waaaghpower]

Have they changed out structure points for Hull Points now then?

You just have a whole bunch of Hull Points, yeah. Destroyer Weapons cause more than one hull point per hit, Explodes! Results just take out bonus hull points, etc.