According to Destructoid, there are now 38 Infinity Ward employees suing Activision.
Read the story at Destructoid here: http://www.destructoid.com/group-of-38-infinity-ward-employees-sues-activision-172209.phtml
Also, follow the updates at G4, which Destructoid mentions as the source: http://g4tv.com/thefeed/blog/post/704273/Infinity-Ward-Employee-Group-Files-Lawsuit-Against-Activision-Over-Unpaid-Royalties-Alleges-Devs-Held-Hostage.html
Apparently, the lead devs weren't the only ones getting the shaft from Activision. Others were apparently also not getting their bonuses as well, which is what prompted the suit. So, this leads me to believe that not only is Activision in a shitton of touble if they prove it, but also that they're far worse than EA (which was debatable until now).