How is it predicable?
Or did you watch the commercial for it?
If you did, that is a huge spoiler..
Everything he plan fit perfectly.
-Lost to Foxy on purpose, butter up Foxy to make him feel good then betray him when he is done with the fool.
-Smart to say because Brook doesn’t have a stomach. That would be cheating and unfair for the Foxy pirate. He knew it was a 50/50 chance to get Zoro to play the game. If the S.Hs choose Franky, He could say that unfair as well because Franky is a Cyborg. Not Usopp because hes hates mushroom.
-He lured the S.hs to a deadly island that affect Df users and the S.hs didn’t have Intel on the dangerous plants. So it easy capturing Robin.
-Lured Franky & usopp underground while those two finally got on to something. Knew that they will be underground that why they implanted the ball and string to tell them they are underground.
Shock franky with lighting, he is a cyborg after all. Captured Usopp and franky.
The only thing he failed at is getting out witted by Brook faking their capture.
This special was meant to be funny and fun to watch. Nothing to be so serious about like Kingdom where if your strategy fails, People die.. Not in One Piece :p