The NINKI ratings are the results of a poll conducted by Oricon indicating interest in an upcoming release. Although the ratings are never a true reflection of sales, it does give a strong prediction about where the single/album will place in terms of popularity amongst the Japanese public. However, they are NOT an indication of how it will perform in terms of chart positioning and total sales for the week.
Singles:
01 551.90 AKB48 - Sakura no Ki ni Narou
02 87.20 Kobukuro - Blue Bird
03 84.60 Tegomass - Aoi Bench
04 65.50 AAA - Daijina Koto
05 35.90 Yoshii Kazuya - LOVE & PEACE
06 22.50 Kawada Mami - See VisionS
07 21.90 KREVA - Idome
08 21.20 CHEMISTRY - a better tomorrow
09 20.60 ONE OK ROCK - Answer Is Near
10 19.60 Kalafina - Magia
You see, it isn't the real stuff, but it is an interesting prediction. Just like Yuki88 said, you should never fully believe on it lol