The tables below puts Kennedy's career in perspective. The bottom line is Kennedy raced a lot at a very high level. He didn't just do a few time trials a year in perfect conditions on his home track. He was willing to race anyone and anywhere. The tables below show total number of sub-13:10 and sub-7:40 performances.
Number of sub-13:10 performances (5000m)
Bob Kennedy - 14
Bernard Lagat - 12
Galen Rupp - 12
Paul Chelimo - 6
Ben True - 5
Chris Solinsky - 4
Hassan Mead - 4
Lopez Lomong - 4
Matt Tegenkamp - 4
Chris Derrick - 3
Dathan Ritzenhein - 2
Evan Jager - 2
Eric Jenkins - 1
Grant Fisher - 1
Joe Klecker - 1
Matthew Centrowitz - 1
Ryan Hill - 1
Sean McGorty - 1
Sydney Maree - 1
William Kincaid - 1
Number of sub-7:40 performances (3000m)
Bob Kennedy - 20
Bernard Lagat - 11
Chris Solinsky - 5
Matt Tegenkamp - 4
Paul Chelimo - 4
Ryan Hill - 3
Sydney Maree - 3
Ben True - 2
Doug Padilla - 2
Jim Spivey - 2
Steve Scott - 2
Adam Goucher - 1
Alan Webb - 1
Andrew Bayer - 1
Ben Blankenship - 1
Dathan Ritzenhein - 1
Eric Jenkins - 1
Evan Jager - 1
Garrett Heath - 1
Grant Fisher - 1
Hassan Mead - 1
Joe Klecker - 1
Lopez Lomong - 1
Marc Davis - 1
Rudy Chapa - 1
Sean McGorty - 1
Tim Broe - 1
Will Leer - 1