Perhaps UFC's threat to counter the April 17th Strikeforce/CBS/M-1 event was just that, a threat.
Kimbo Slice, who was rumored to be the headliner for the UFC's last minute card was just announce to be on the 113 card by the UFC today. Kris Karkoski of MMA Frenzy reports that the rumor of the counter programming by the UFC was dismissed by this announcment of keeping Kimbo on the 113 show.
The Strikeforce/CBS Mega event includes three title fights:
Dan Henderson vs. Jake Shields (middleweight champ)
Muhammed “King Mo” Lawal vs. Gegard Mousasi (light heavyweight champ)
Shinya Aoki vs. Gilbert Melendez (lightweight champ)