Just a reply passing regarding the interview, Saki didn't meant that Berryz should be given a Budokan concert before cute. She meant that it was an impact to her when it was announced that Cute was going to perform at Budokan. As same generation mates as HPkids, she mentioned that Cute was more than a rival to them. They are both buddies, and rivals fighting together. And that's why when it was announced that Cute was going to perform at Budokan, it became a impactful (and regretful) moment for Saki herself, which led to her beginning to ponder, what else more can she do as a captain, to lead the group of 'monkeys' up together to a common goal.
About the 2 ch thread. The title basically quoted " Captain Shimizu Saki says that Morning Musume is not having their second breakthrough. I am only interested in Cute in HaroPuro" but that was nothing she has said. She mentioned that the achievements made by mm/juice juice basically have no much impact on her about how she felt about her own group, though it's nice to have those huge poster on the streets, Berryz is Berryz and they have their own way of walking through the journey.
Talking about that, 2ch thread on Captain Saki are usually harsh in natural and they usually twist her words to make it sound like she's being a bad person. So Yupps.