Bob Benedetto wrote a fascinating book titled "Making an Archtop Guitar" in which he describes the processes he uses in building his world class archtops. He describes building an archtop using "inferior" tonewoods...in fact, the top is made of construction grade 2" x 10"'s. He says the guitar plays and sounds as good as those made with his best woods.
His point, as made earlier, is that a guitar's design and construction methods matter more in delivering great sound than does beautiful wood selection.