, 13 February 2015 (UTC) 
 :Well, I'll try to write it simple. I'm not very interested in the J-pop article itself, or those groups, but for the objective and relevant information. The thing is, the only relevant and objective representation of popularity are record sales, not surveys. Some surveys, in the case of Momoiro Clover Z and which you point out, was done only by one source, the Nikkei Entertainment! magazine, and it actually shows the popularity in the first-half of the 2013 and 2014. Neverthless, they are not the most best-selling music act in Japan in those years, that's AKB48, and there's no reason why the group Momoiro Clover Z should be featured and more highlighted because of some surveys, more than AKB48 or Arashi.  

 :Since the section talks about 2010s, and you reverted those edits, in 2010 the yearly record album ranking featured Arashi at number 1, while in the single ranking Top 10 were featured only Arashi and AKB48 singles. In 2011, the yearly album ranking featured AKB48 and Arashi in Top 2, while in the single ranking Top 7 were featured only AKB48 and Arashi singles. In 2012, the yearly album ranking featued Mr. Children in Top 2, while AKB48 and Arashi at 3rd and 4th place, while in the single ranking Top 7 were featured only AKB48 and Arashi, and as well in Top 10 three SKE48 singles. In 2013, the yearly album ranking featured Arashi at number 1, while in the single ranking Top 4 were featured only AKB48, and in Top 10 also Exile, SKE48, NMB48 and Arashi singles. In 2014, the yearly album ranking featured AKB48 at number 1 and Arashi at number 3, while in the single ranking Top 6 were featured only AKB48 singles, and Top 8 also two Arashi singles. 

 :As you can see, in neither album or single yearly ranking from 2010 to 2014 Momoiro Clover Z didn't reach the Top 10, and that points to the fact there are more notable and noteworthy music pop groups, bands and solo artists in Japan. Like in the case of Kyary Pamyu Pamyu, she did not gain any internationl popularity with her single "Pon Pon Pon" (didn't even reach Top 5 on Japan Hot 100 or chart on Oricon), her singles barely sell 20,000 copies, and only because Katy Perry and Ariana Grande tweeted about the "Pon Pon Pon" single, that does not make it noteworthy. There countless artists in Japan with such success, and countless more notable. 

 :According the Wikipedia:Neutral point of view, the article information needs to be represented fairly, proportionately, and, as far as possible, without bias, because of that, will revert the article to my revision.  14:54