Are we missing something here?
On a intra European scheduled flight why would each passenger be checking in 2 hold loaded bags of 14kg each? Many business passengers would only have carry on baggage. Even if there was an error of some 700 kilos it would make very little difference to the practical speeds. I am not familiar with the A321, but on a 757 that sort of error would amount to around 1 knot to the various reference speeds! In any event standard weights are normally used for baggage.
From DUB to anywhere in Germany you are talking about a 2 hour flight with 80 passengers. It is difficult to understand how a significant and supposedly newsworthy error could result from any of the baseline limits being exceeded?
In fact I see from your translation that none of them were.
So why would no report be made if there was a serious incident? Two attempts made to raise the nose, eh? If no report was made, who flagged the supposed incident?