Compare? I do it everyday. I only have two guitars (see sig). Both get tuned up and played during the hour or two I play every morning. I routinely go back and forth between them...often playing the same song back to back on both. It’s only natural to compare them...which is different than pitting one against the other.
Both guitars are spruce/Honduran though the Collings has an Adi top and the Bourgeois is baked Sitka. Their voices are wonderfully different. The Collings is crisp with clear note separation and plenty of volume and solid but not overwhelmingly bass. The Bourgeois has slightly less volume and a more compressed warm tone. Comparing them always brings a smile to my face because they compliment each other so well. My perfect acoustic duo.