I have to agree that there is no reason not to be able to get the nyzul ws now adays. You can even go as a pup now and still contribute. Back in the day it was mnk and sam onry and it sucked for it.

Dont rely on a shout for someone doing the floors you need/want, MAKE A STATIC, it takes 2 hrs once a week and you can go 20 floors minimum a weekend (best my group ever did was 25 floors, but its all on the luck of the floors you get).
We did 20, 40, 60, and did a mid week 70, 90, mid week 100. Took us 4.5 weeks and aside from me, my brother, and 1 friend, everyone else changed weekly.

IT IS SO EASY, i cannot stress it enough.

As for why pups shouldnt get asuran fists:
1) We are clowns/performers, not martial artists, it says it with everything we do and everything SE gives us including our class description, af look and name, the much later MA trais, lack of DD based JA.

2) we cant even use all types of h2h weapon, specifically the one type needed to unlock it.
pup can use:
baghnakhs
claws
katars
sainti

mnk can also use
knuckles * trial weapon for asurans fists
cesti * how the trial weapon is described in the quest text.

I dont think its an accident that we dont have it, even after having our h2h skill uped to B+. The lack of an A+ skill translates into SE thinking we arent real DD and thats why our pets get A+ skill and bad ass ws. I am honestly supprised no ranger has complained about armor shatter yet.