Sorry, but this is simply not true.
Except for "When it became clear that the Pirate Party would likely get into the parliament (predicted to get 6.5% at most), they were already scandalized, how anybody could vote such loonies."
I'm not sure what you've watched, but it certainly wasn't the coverage by ARD or later the local RBB. Or not a lot of it.
Other parties had no problem naming them and dis so frequently as the success of the Pirates and the catastrophic result of the FDP were the main topics of most discussions.
Yeah, of course they also called the Pirates "new", but so did the Pirates themselves.
During a talk with representatives of all parties (that matter), they even did a little "special" analyzing where the pirates' 9% came from and asked everybody's opinion about that and why their parties didn't manage to get those votes.
Some politicians from the "established" parties even congratulated the Pirates. I remember people from the Greens and the Lefts doing so.
And they certainly didn't say "Congratulations to those others".
And I don't remember a Left party guy talking about "they overestimated themselves".
But I do remember one pointing out how the Pirates _under_estimated their own chances and that the Pirates obviously were surprised by their success as much as anybody else, citing (almost) not having enough candidates listed to fill the seats they won as a proof.
And he wasn't alone, several Pirate candidates repeatedly stated how they were "baff" (perplexed) or "still a bit in shock" in view of their success.
I also have no problem with KÃ¼nast claiming they gained the most as those gains and losses are calculated in comparison to the last state election in 2006 and the Pirates weren't yet on the ballot back then.
If you say the Pirates gained 6% to reach their 9%, you're comparing their result today to the 3% they got in Berlin during the last national election in 2009, i.e. you're comparing apples and oranges because
a) people vote differently in state and national elections and
b) the gains and losses of the other parties were based on the results of a different election.
Yeah, technically the Pirates gained the most since they went from nothing to 9%, but I don't blame her for ignoring the n00bs when the main intent is to show how they are more awesome than the sucktitide that's their traditional enemies or their (realistic) competitors when it comes to building the government.