I'm going to get blasted for this but The Cage is overrated. The cast is almost uniformly bland and uncharismatic. The script is only okay. The money is on the screen, and the Talosians are cool, but it's nowhere near Star Trek's finest hour. WNMHGB is a much more dramatic story with far superior casting.
Agree. "The Cage" is flat, both in terms of color and story. It works better as the filler in "The Menagerie," but as a standalone it is no more cerebral than any other science fiction show of the era, such as THE TWILIGHT ZONE and THE OUTER LIMITS. In fact, the Adam and Eve trope is handled much better in many episodes of the former.
The cast doesn't stand out. Pike isn't really a dynamic character, due really to Hunter's rather stoic performance. Bruce Greenwood is far more charismatic in the role. Other than Nimoy, no one in the cast really stands out. While the character of Number One has potential, the actress doesn't.
"Where No Man ... " is a much more engaging story with a great character dilemma for Kirk. More than that, it has wonderful conflict that comes from opposing worldviews — Kirk's and Spock's. Wish there had been more of that antagonism in the actual series. (And is something I'm glad the Abrams' movies have picked up on.)