Quilt shows are a finicky thing. Something to keep in mind when entering your work - the judges have to find something "wrong" per say to determine a winner for each category. Does it mean your quilt was a flop? Absolutely not. It sounds kind of negative at first...but really...it's just the result of process elimination to determine the highest quality of work in that category based on what was entered. Does that mean your quilt was not high quality? NO! Absolutely not! When you have two fantastic quilts...how do you determine which one wins? You have to find the "flaw" or something that separates the two so that a winner can be determined.
That being said - you and I can look at two different works of art and see different things. Even certified judges who've gone through extensive training use some scope of personal opinion when judging. I mean, it just is what it is. You can be a good judge and be as objective as possible...but some judges look for good bindings and while others have bindings less on the radar than quilting...so no matter what show or who judges it, there is some element of "opinion" in there.
The best thing to do IMHO? Take it with a grain of salt. Listen to the comments with an open mind and decide for yourself if the comments will benefit your future work or not. Do not take it personally. Really. That is SO much easier said than done, but remember, the BEST quilters who've won tons of ribbons and awards have received less than glowing comments at one point.
Congrats to you for putting your work out there - that's the biggest hurdle!