The results of that adventure are chronicled in his book,"Kook."
VOA: standard.2010.08.04
That is, to say that the endings are identical because they use similar assets is like saying that two endings of a Choose Your Own Adventurebook, in one of which you die and in the other of which you live, are identical because they are both printed in ink on paper.
Apart from "Chronicle" they were used for action movie "Safe House, " starring Denzel Washington and Ryan Reynolds, the 3D comic-book adventure "Dredd, " and TV drama "Mary and Martha, " starring Hilary Swank.