I dropped two points and could care less (sorry to sound negative). My input is just n=1, but I find a lot of the clinical stuff boring and instead found the Step 1 material 1000x more stimulating (yes, the opposite of most people). I actually doubt anyone compares them relatively to be honest. They're two distinct exams.
But I'd say Step 1 is a much bigger deal because it's the one everyone prepares the hardest for, so it's the best predictor of work ethic and test-taking ability. People just don't prep as hard for 2CK (even if you're competitive, you prep accordingly, but still not nearly as hard as for Step 1 unless you tanked it and are trying to make up for it). I think most people do better on 2CK because its less book-dependent.
Yeah, there are people who shoot up on 2CK. You see a lot of doctors like that floating around (i.e., those who know how to manage but can't tell you the MOA of a simple drug or what kind of organism Legionella is).