There is also a showmanship aspect to this as well.
Why show his cards at some rinky dink debate. Wait for the big one.
He doesn’t need to star in some Off Broadway show to work out the kinks. Go straight to Broadway. In this case, Fox.
No one will know what is coming. Not the fellow debaters. Not the press. Not Fox.
BTTT!
The GOP-e pundits are already rehearsing their “Bush Won The Debate” talking points.