Apple also have a 2-year lead on Emojis, however opposite could be said about screens, wireless charging, smaller bezels, and... batteries maybe?.
I think you misunderstand what "2-year lead" means. They don't have a 2 year lead on Emojis, Any company could make emojis without any real research going into it. They buy there screens from other manufactures so they aren't behind there, Wireless charging is a standard so they weren't behind there, bezels also no behind, nor battery technology.
Apple was late to the game in some of those fields, but there where never behind. FaceID having a 2-year lead means it'll take 2 years for other companies to research the technology to get it into a phone.