Dude, whatever.
First of all, I'm a shading whore. I felt the piece could have used shading, but that's just my opinion. I guess I can't tell you how to do things, so if it's your "style" not to shade, fine. I just mentioned something that seemed off to me.
Also, since you've never tried, I can't be 100% sure you wouldn't be as good as them. But judging from what I've SEEN, they seem to have more talent than you. Again, that's not to say you suck or anything, just that they're better.
And uhm, yeah, from what I can see...you are just small minded. The piece was well done whether you'll accept that or not, and didn't deserve such flames.
I don't find a point in arguing this, but like...next time you don't like something, say something more constructive or less offensive than, "what the fuck?"