If I were the one who came up with a concept and had it ripped off I'd demand every cent earned from it- or punitive damages, whichever was likely to be more... unless the laws are different in Japan from what they were in 1980's America (I watched many episodes of a community college show that taught me some business law, but it was an old show) and one can claim both from the same defendant.
^ ^ Miss A uses a plain board with a static silouette (not even sure if it was the girls' silouette) which rotates to reveal the girls.
Berryz had a LCD Panel which projected a non-static video of their silouette. The panel doesn't rotate. The girls walked out from behind the panels. I don't see the similarity at all.
Infact Oikaze's reference to James Bond is more relavant >_<