who the hell say that this is meion artist ?

if its not posted on his page then its not his work.

same with niliu , different artist. stop mixing things up!

Base +7, Gkana -6

because meion had posted this work onto pixiv so that she is this work's artist.futher more the style of this work is typical meion's method include stocking ,facial etc.

Base +6, qq1301495816 +6, bb日川冈坂 +3, sofuto666 +1, qjlj +5, krvn64 +13

No rule saying an artist can't have multiple handle names, just like how author can have multiple pennames, or seiyuu with numerous aliases. There's also possibility of one advertising the other or some kind of joint work or something else we couldn't even think of.
What to watch out is those who steal others' works and charge money for them.

Base +11, qjlj +5, cuibug +6