Jeopardy five game limit winners

[Little_stinker]

Who from the five game limit era would have gone on the longest run under the revised rule for length of participation?
Frank Spangenberg(sp?) might have been one of them.
Who was the brightest contestant from the first era?
How much did Ken Jennings benefit from the revised rule? Kind of like Tom Brady benefitted from the rules put in place in the NFL to emphasize scoring.

[icecream]

Brad Rutter would have had a much longer run.