For the 2 new 3DS music games,
SE ≈ SEGA * 6
And
SE ≈ Diablo like * 2
http://www.neogaf.com/forum/showpost.php?p=40859642&postcount=674
I presume SE means Square Enix, which means Theatrhythm has sold 6 times more than Rhythm Thief. Don't know what Diablo means though.
Read my original story on Fictionpress (Shinigami Twin): http://www.fictionpress.com/s/2996503/1/Shinigami-Twin
As well as my other one (Hell's Punishment): http://www.fictionpress.com/s/3085054/1/Hell-s-Punishment
Nintendo Network ID: kingofe3