WESTLAKE VILLAGE, Calif. — When Shakespeare posed the question, “What is in a name?” he could have had the all-new Mazda CX-3 in mind. You see, in terms of size and handling, it’s a crossover in name only. Mazda’s 3 sedan is seven inches longer and nearly three inches wider than the CX-3. Mazda suits — well, most of them don’t wear suits — tell us that the CX-3 really has more in common with the Mazda2 than the 3. In the long run, though, does it really matter? Nah.