Don't get me wrong, I believe after a large number of tries he solo'd AG, especially with npc haste and shit, it's just to list AG as a NM soloable by NIN is a bit off-base. By that I mean that 99% of your average NIN with a decent EVA set going down there to solo AG is going to end 1 way and 1 way only.
I'm 100% positive I can solo it, I've had to take a break from really pounding at the solo events to make money for my Usukane body, and helping my wife with Morri head, so throwing another 15k XP at AG right now isn't top of my priorities. Even after I do kill it, it's one of those mobs where I'm 100% sure the next day if I go to do it again I may wind up dead, it's hit or miss lol.
And thank you very much for that compliment!