Ok this is getting ridiculous now. The sultans of spinning gear are living is some sort of alternate universe. There isn't any fish a BC can land that will be lost on spinning gear. There aren't any applications that the BC really is better for. Quote your can do everything with a spinning reel that you can do with a BC, the answer is no you can't. Using this logic we would all still be using our old Zebco spincast reels, in reality there isn't anything you can do with a spinning or bc that can't be done with a spincast, plus you can cast a spin cast into a strong wind! Must be a better set up! Please. Is spinning gear effective? Absolutely yes! Is it as strong as a BC? No. Are there applications where a BC has the advantage? Yes. Can you flip a jig with a spinning reel? Yes! The question is can your spinning gear with inferior drag, limp rod, etc horse the fish out of the twisted pile of wood and grass? Probably not.
Good night, no offense to Fish Chris I respect his obvious angling skills, but his post makes the perfect reason for using a BC. Lets say you fish from shore and don't have the luxury of chasing your fish down with a boat, you either turn the fish or loose it, better be using a BC. Or you are fishing flooded timber and can't move the boat, when you hook the fish you have turn the fishes head now or loose it to the timber, again better have a BC with heavy drag and 50lb braid, 10lbs of drag just isn't enough in these situations. So in short unless you are fishing open water, have unlimited line or a boat to chase the fish with you are better off with a baitcasting set up. Or another way if you pond fish, fish an open lake etc there isn't nothing a spinning reel and BC can't do, but if you fishing water like the rest of us with logs, limited access to run the fish down etc, a BC has advantages.