I mean single editions. What's not to see? One edition of DBZF selling 6 million copies is more impressive than 5 editions (Super SFIV, Super SFIV Arcade Edition, Super SFIV 3D, Ultra SSFIV) of SFIV selling over 8 million when the main game is only around 3.5.
MKX sold 5 million with one edition. I'm not sure DBZF will do better than that but either way that's not fair since all the editions are the same game.