Different techniques will give you a different result. Like different media - charcoal sketches, detailed inks or pencils, watercolor, acrylic paint, oil, silkscreen - they are all good, and they all have their own techniques. The artist Marc Chagall said 'I work in whatever medium likes me at the moment'. (FMQ doesn't like me at ANY moment, so I'm in total agreement)
I don't know how granular you want your distinctions for every type of quilt deserving a ribbon. When I look at a quilt hanging up at a show, I like best the quilts that seem to have a harmony of techniques, colors, styles.
Could a quilt win a ribbon for brilliant quilting when the piecing is sloppy or the pattern is common or the colors a little off?
What about boring 'mattress' quilting that doesn't relate to quilt design or size, on top of a beautifully designed and pieced quilt?