Can't be bothered: a kit wine won best of show white. It didn't get that for being free of flaws, it got that for beating hundreds and hundreds of other entries on objective criteria, in a category that included wines made from all manner of vinifera material.
Since you can't be bothered I will help you out by reposting it here:
This is the main reason I don't give any regard to wine contest results. Just because a wine has no faults or flaws does not mean it is good... Conversely, many "technically" flawed wines (hint of brett, hint of VA, non "correct" color) can be extremely good. Kit wines do well in competitions because they are easy to make without flaws or faults (not to say that they can not also be good).
Whether a wine is good, IMO, is really a matter of personal preference...
As you can see I am not attacking kits, but rather the whole premise of wine competitions in general. Maybe before jumping to conclusions and commenting on a 4 page thread, you should bother to read through it. The fact that the wine won best of show says a lot about that specific wine and the judges who obviously liked it, but not much about kits in general or whether they should be in their own category.