Hi GMC,
Even though I never A/B'd the two, I have played on both and own one of the 2.
The feel, and weight are very comparable, the Bluesbird might be a few grams (or whatever that is that you use to define very light amounts of weight :lol: ) lighter, but I would say that the main physical difference is in the neck. It is fuller on the Bluesbird. Fits my hand perfectly, but I can se where some would rather the slimmer Gibson profile.
Soundwise, it is totally subjective to what you want and like. They're equally good, just different. The Les Paul sounds more "mid-rangy" to my ears, while the Duncans of the Bluesbird have more screaming trebles.
Two great guitars in my book. (One much more expensive than the other :wink: )