The way I read it was that Kaiji < Nanoha in troll quantity. You sure your syntax is delivering what you mean?
Also, Nanoha has been posted quite frequently in the past and had its fair share of detractors. A recent example is the "training" hate as StrikerS was airing. Also, let us not forget the thread where a Cardcaptor Sakura viewer watched Nanoha s1 and A's on a recommendation and had some complaints to vent (predictably, the OP had a torrent of flammatory replies).
I think mostly everyone understands the "lol magical girl as mecha shonen" appeal and has made peace with it to go to each own's merry way (which is a rare thing for /a/). In contrast, Naruto and Lucky Star are treated in a conditioned response of "for the lawls" or some such.