Here's Genie above BK. BK is a little smaller with the case off as it's a true case. Genie weighs about 18.8 lbs. with al accessories BK weighs 20.2lbs. Genie has fewer included attachments, no button hole feature, and more plastic parts externally. In fact only the sewing plate is metal on Genie. Internally they both have a few nylon parts but are mostly metal.
Below are pictures of the two with their cover/case on.