I've speculated at times before that Aurang isn't a liar he's just a braggart, so I have basically always agreed with you.
I've gotten the same impression of Aurang in every appearance he's made (just look at how even Shae is shocked by Aurang's directness with Titirga).
After re-reading the excerpt and going back and having a look at TTT, I see that: 1) Kellhus' description of damnation to Proyas lines up exactly with what Aurang-as-Esmi already said ("We were born for damnation's sake") and 2)What Kellhus experiences in the Outside also lines up with Aurang's earlier statements ("Love is the Way... and yet these little demons you call Gods decree otherwise? Dole out their rewards in proportion to our suffering?").
So yes, Aurang is love, Aurang is life.

(On a somewhat unrelated note, there's something in that conversation between Kellhus and Aurang that always really caused me headaches: Aurang says "So long as there are men, there are crimes." You may recognize this statement as being the exact one uttered by the Anasurimbor to the Dunyain in the prologue of TDTCB, to which the Dunyain responds: "Only so long as men are
deceived." Recall that Aurang is called "the Angel of
Deceit". I don't really know where I'm going with this but I think there's an Illuminati plot in there somewhere.)