To most people, all convertibles are cross-shoppable. To limit the options further, a 4 seater convertible is an even smaller market. I see why they'd compare them. Most people don't care about drivetrain layout or power. It's just a fun, stylish car.
Every time I came across a picture of an original Beatle in that article, I'd go "damn, new bug looks awesome", then I'd realize it's actually an old Beatle and get sad again.