It's not really scientific but holding both in my hands, the 2014 is lighter. Do you have 2014's in your shop? (you're a shop kid, right?)
Would you say the Genesis are lighter than the 2013 cartels?
Is it lighter? Sure. Is it significant? No way (especially considering the combined weight of bindings and board).
And no, I am not a shop kid (unless you consider being an investor in a number of shops a 'shop kid').