What's so great about sharklets?

Sharklets are basically Airbus’s version of blended winglets, a technology that has been avaliable for more than 30 years and been used by several other manufacturers, so why are these so special?

Fuel…Fuel is the answer they do this to save as much fuel as possible even if its just .001% it makes a huge deal in airline industries. Now why is Airbus copping Boeing idea? No clue.