I've come to believe prime is rubbish in most cases.

No fighter should be labled "past his prime" unless he is showing a consistent obvious deterioration in performance.

All Cazlaghe critics, and many of his fans, say he beat a "past his prime" Hopkins, yet Hopkins recorded TWO of his greatest wins immediately before the fight and by his own admission his GREATEST perfomance after it.

As Ouma said (sort of), physical prime and mental prime occur at different times, so what is better, when you have two solid hands or a clearer/calmer/smarter/experienced head?