I'll explain a bit, I was one of the people in the crew that was on the excavation in Blago, but my french is not well enough to explain everything in the slightest detail...
On the press-conference it was quite clear that Kerberosaurus was certainly not a new dinosaur, there were others bones that were found (3 vertebre, sauropoda, late maastrichtian) that almost certainly are from a new specie.
The journalists would like to say as much as possible about the descoveries in blagoveshensk but mixed the information, sow they thought kerberosaurus was the new discovered specie, while in fact there is too little information to discribe a new specie