01 56.80 Hamasaki Ayumi - A Classical
02 56.20 AK-69 - THE INDEPENDENT KING
03 34.50 2AM - VOICE
04 25.50 Shinomiya Natsuki (Taniyama Kisho) & Miyano Mamoru (Ichinose Tokiya) - Uta no☆Prince Sama♪ Shuffle Unit CD Natsuki & Tokiya
05 23.60 BOOM BOOM SATELLITES - EMBRACE
06 23.10 StylipS - Step One!!
07 19.00 Nakagawa Shoko - UCHI-SHIGOTO, SOTO-SHIGOTO
08 15.40 Kai Band - ROCKS
01 88.70 Yamada Ryosuke - Mystery Virgin
02 57.30 Yuzu - REASON
03 50.90 Iwasa Misaki - Moshimo Watashi ga Sora ni Sundeitara
04 22.10 FUDANJUKU - Jinsei Wahaha!
05 19.90 Taketatsu Ayana - Jiku Tours
06 18.00 Kitamura Eri - Miracle Gliders
07 17.30 Sakamoto Shintaro - Matomo ga Wakaranai
08 16.70 BiS to Dorothy Little Happy - GET YOU
09 16.30 BABYMETAL - Ijime, Dame, Zettai
10 15.40 Dohatsuten - Nihon Retto Wasshoi Keikaku
The NINKI ratings are the results of a POLL conducted by Oricon indicating degree of interest/degree of purchase intention 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.
According to Oricon's note under the NINKI page, Oricon researches about 870,000 of its members by random sampling of 400 members in their 10s until 40s. 50 men and 50 women are chosen randomly to participate in each age group. (However, some popular artists have had NINKI exceeding 500, so we can only assume that Oricon has extended the polling to around 600/700 people now.)
I'm surprised that ONE OK ROCK's Deeper Deeper is not in the list, but that could be due to the single being announced after the survey was sent out. It's not by any chance postponed, right?
Albums chart certainly looks interesting, though I have doubts if Ayu can top it with a classical album, but we'll see. She will have an extra day advantage though since it's released on Jan 8th while others are released on Jan 9th.
Source 1, 2