There are two factors involved with the fascination with Davis. First, it's speed. It's the one quality most people believe the Packers are missing with their wide receivers. It's why people were so enthralled with a seventh-round pick at WR a few years ago - his name was Janis. The second reason is that Davis is still new, so in our hopeful minds he's got the speed and perhaps ability to become a pro bowler. Janis is, to a football fan's mind, old hat. He seems to be, in our impatient minds, reaching his ceiling, and it doesn't seem to be a pro bowl ceiling. Davis we just don't know about, so we can still hope he's the next Bob Hayes.
I think that explains the fascination.