Why Would You Compare a Tesla Model 3 to a 7-Series BMW?

Simon Alvarez, writing for Teslarati:

The Model 3, for example, was initially announced to have a 0-60 mph time of “less than 6 seconds” during its unveiling event. Even the vehicle’s “slowest” trim, the Standard Range variant that’s available off-menu, has a 0-60 mph time of 5.6 seconds. That’s a hair faster than the BMW 730d M-Sport.

Why would you compare a Model 3, which is roughly the equivalent of a BMW 3-series, to a 7-series, which is a full two size classes higher? Similarly, the Model S was often compared to the Audi A8, Merc S-class and BMW 7-series, while it should have been compared to the A6 or A7, E-class, and 5-series.

Teslas are really interesting cars and what they have done so far is nothing short of amazing, but all the fanboyism is really putting me off.