I guess my question is, are man CBs simply the best of the CBs, and zone CBs aren't as talented?

Or, what? Because when I read analysts talk about it, I can't quite tell if what they're talking about is the player's overall ability, or if he fits best in a zone scheme as a special ability that player has, but a man CB plays best man, but can't play as well in a zone.

Thoughts? I so enjoy your very instructional comments on alignments and systems.