I bought the class 2 mainly because I've had them on other small cars and I already had an assortment of hitch receivers to fit it . . . . and, because in more than 20 years, I've never had any accessory (bike racks etc) which require a 2 inch receiver. Also, the smaller hitch adapter is easy to stow away - I wrap mine in an old tee shirt and stow it in the rear drivers side compartment
But . . . . it's true that the 2 inch receiver *is* more versatile, *if* you have need of accessories which will only fit a 2 inch - Not a consideration in my case
Don