What are you even trying to argue about? Sure, AW can be killed if the player is bad. Pre-patch all you needed to survive was fade cloak and blade, maybe the occasional chain lightning. Post-patch it's cloak, blade, stonefist, restorative veil. It's really simple, I don't know what kind of build you've been playing with if you have trouble staying alive with him.
Sorry if I sound rude but I really don't understand why you are arguing against AW's survivability.
Spirit Blade, Stone Fist, Chain Lightning, and Fade Cloak are what I've been running since the SB nerf. The issue I take with DrKilledbyDeath's posts is the use of "infallibility" to describe the AW. The AW is not infallible, even in a capable player's hands (ever get ambushed by a RT assassin from the front, followed immediately by one from behind? Guardian Spirit got chewed through in the blink of an eye). And being out in the open on the Fereldan Castle map with ranged units all focusing on me can lead to my barriers being unable to cope with the incoming damage.
This is with Staff of the Dragon, Chain Lightning ring, 10% CD Amulet, and minimal promotions (1/2/10). So, I have the gear to provide top-end damage, just not the promotions. Perhaps DrKilledbyDeath's promotions are enough to allow him to tank any damage that comes his way as an AW, regardless of tactics used. I on the other hand, actually have to avoid being the center of attention at times. Wave 3 or 4, perilous Fereldan Castle, being out in the open with all archers pelting me with arrows (or RT Knights and Horrors, which can be even nastier), is not pleasant. Using LoS to block ranged attacks and funnel enemies is actually a good idea in my case, not some silly notion that can be disregarded as completely unimportant.
This all of course could simply come down to the fact that I use Spirit Blade, whereas DrKilledbyDeath uses Fade Step in its place. Due to the inconsistent nature of Restorative Veil (it most certainly doesn't work as the description indicates; 10% of damage done returned as mana. If it did, every single swipe of SB on weakened enemies would return ~30 mana on non crits), sometimes I end up short on mana, or bottoming out entirely when using SB. DrKilledByDeath doesn't have to deal with the downtime that can cause.