On what do you base that assertion?
He doesn't belong in a legislative body, period. He would have been better off if he had stuck to the judiciary once it became clear that he had no chance of winning a governor's race in Alabama.
Now THIS is a man who knows his limitations and his personality -- even though he doesn't have a lot of fans here on FR:
"I would rather die than be in the United States Senate. Okay? I would be bored to death. Can you imagine me bangin' around that chamber with 99 other people? Asking for a motion on the amendment in the subcommittee? Forget it. It would be over, everybody. You'd watch me just walk out and walk right into the Potomac River and drown. That'd be it." -- Chris Christie, former governor of New Jersey, in response to a question about whether he'd run for a U.S. Senate seat after his term in office ended