Prediction - no it won't. He's not working from a script here with multiple takes. His flubs can't be edited out. He's got to be able to think on his feet and formulate and communicate a credible opinion. He's demonstrated that he can't do that.
Arnold has done 1000s upon 1000s of interviews with the press in every corner of the globe in his 20+ year career and made over a billion dollars understanding how to play to the camera. There is no more media savvy candidate.
Since debates are as much about image as message (Norwood/Dingle, anyone), McClintamantites that think Arnold is going to be outclassed in front of the cameras are delusional.