IMO, recipe counts for maybe 10%, at most 20%, of the finished beer. Ingredient choice and quality and brewing techniques are a much bigger factor.
I keep hounding our club members that recipes DO NOT really matter as long as they are in the ballpark. You need a rock solid foundation that starts with cleaning/sanitation, then yeast/fermentation management, and then quality ingredients and consistent brew day/packaging processes. Once all of these are in place, start working on perfecting your recipes.
All good advice. Good fermentation, maturation, and packaging are overlooked by many homebrewers. You can lose a bunch of points in a comp due to poor packaging process.
Got to tour Bells production facility a few years back. John Mallet stressed that packaging was extremely important. "Why brew a great beer then mess it up with poor packing processes?" to paraphase what he said.