Should Members of a Club Sponsoring a Car Show Be Eligible for Awards

This is probably a stupid question, but what are the trophies at car shows typically for? Are they reserved for the highest quality cars, or does rarity/popularity of the car play into who gets them (e.g., the 318 4 door vs. hemi convertible example above)?

I think if I were a judge, I'd inherently favor the cars I thought were cool, versus ones that may be more "correct" or had nice shiny paint. Either way, it sounds like there's bound to be at least some level of subjectivity involved in any type of car show judging scenario.