YAYZ!! DOUBLE POST!!!
So yeah, I took the quiz a 2nd time and got Nids again. Third time's the charm I guess, and I get the Chaos Marines.
The funny thing is that both times I got 'Nids, it was 100%; this time it was 83%, which edged out Tau (67%), Daemonhunters (67%), Witch Hunters (50%), Eldar (50%), Tyranids, Space Marines, Imperial Guard, Dark Eldar (33% all), and 17% for the Orks, with 0% for the 'Crons.
EDIT1: 4th try gives Eldar at 83%, Guard/Crons/Daemonhunters at 67%, and Nids/Dark Eldar/Chaos Marines @50%, and Tau/SM/Witch Hunters @33%, and Orks @17%.
EDIT2: 5th try that I really tried to be truthful of myself with, yielded a "tie breaker" that my first choice gave me the Eldar; I tried again, chose the other option, and got Chaos Marines.
EDIT3: 6th try yield Dark Eldar 100%, Eldar/CSM 83%, Daemonhunters/Witch Hunters 67%, Tau/IG 50%, SM/Nids 33%, Orks 17%, Crons 0%. I wonder how many times I'll take the quiz till I get Crons.