While the North American market is embracing crossovers at a torrid pace, Cadillac continues to hawk its portfolio of cars, ranging in size from the trim ATS to the jumbo XTS. In between those two sit a pair of sedans with seemingly similar size and purpose, the CTS and the CT6. To the untrained eye, one will likely wonder why Cadillac is seemingly offering two products that compete in the same space, arguably cannibalizing sales. It?s like two...