MacBook air was pioneer of light laptop but PC manufacturers has surpassed apple in that aspect.
Many 14" laptop PCs are lighter than 13" MacBook pro.
Weight matters more than thinness for laptop anyway
I've always found it odd, but maybe I shouldn't, that any laptops with screens 14" or smaller are generally more expensive than those with screens 15" and larger. With smartphone screens creeping up in sizes, my desire for a tablet is waning more and more. I would
generally prefer a smartphone with around a 5.5" screen, a 10" tablet, and a 17" laptop. Last, but not least, a 32 inch desktop setup. All would have a use case scenario. I digress.