Oh I forgot to mention the CURT head with it's pivot point several inches below the kingpin connection can cause CHUCKING. Documented here by several people.
B&W, simple solid latching with a machined 1" thick jaw. CURT flimsy lock color coding with 1/2" thick jaws.
B&W 4 - 1/2" grade 8 bolts each side holding head supports, Curt two questionable grade bolts each side holding head. Look at the attachment areas to the bed. B&W is simply a Superior product with no negatives, can't say the same about Curt.