Before Tuesday, there was no way a MacBook and a MacBook Pro could appear in a single review. Too much separated the two systems, from outer appearance (build materials and backlit keyboard) to inner nitty gritty (graphics processors, etc.). To group the two classes together would have been like simultaneously reviewing a Ford Focus and a Ford Mustang. But the new MacBook and MacBook Pro are far more similar than they are different. From the glass-bezel screen to the front side bus, these computers finally deserve to share the name MacBook. They’re brothers, one a pro, the other a vastly accomplished amateur. Here’s our verdict, after two days of thorough nonstop testing.