Yeah. As Sev said, I don't think anyone exactly has a prize for such, and while some people get it too much into their heads, bragging rights will eventually fade out (or go to an uncontrollable point). Not to mention, yeah we have many artists, but how many are willing to judge? And how do we become sure that bias would be non-existent in some of them?
In short, I don't think we're not ready yet to hold a contest properly, so yeah. D: