Ofc they are because
a) it contradicts the rulebook and the
FAQ (so
GW has specifically addressed it)
b) the Vendetta is considered by most people to be under-costed as it is
c)
IG are an under-powered army [/sarcasm]
Bottom line: it's bad enough that
GW some times contradict themselves in
FAQs, we don't need other branches overruling official
FAQs in quasi-official documents.
Personally I'm not ok with this because I want consistent rulings.