Because I'm feeling super nice and shit today....
The Griffon and Attack2 13 are within a few grams of each other yet the Attack is lower in stand height, easier to get in and out of and is priced cheaper. Great buy for the money. The Marker Squire/Free Ten/Attack 11 are lighter but sacrifice build quality and durability for the lighter weight. Fine for beginners and non park riders but won't grow with you like the Attack 13 would. Kids bindings are even lighter still but are made with very little metal and are meant for kids learning on groomers.
Bindings like the Pivot 12, SPX12, STH13, Warden 13 that are in the same "class" as the Attack 13 are 150-250 grams heavier for a pair. Going to the 16 or 18 DIN versions of these or Demo bindings gets you 400 grams plus heavier than the Attack 13.
So you currently have one of the lightest bindings out there that doesn't sacrifice quality for lower weight. They are heavier than kids bindings but very light for adult bindings that will last you years of use while you get bigger and improve.
Think the bigger difference you're feeling is the heavier weight of the new longer, wider, full wood core skis. Kids skis like kid bindings are made lighter with cheaper materials. The Line Blend has a wood core, beefy edges, wider width and side-capwall construction that add up to a ski that is heavier than a foam/composite core, 80mm wide, full cap construction kid ski. The Blend(or any adult ski) is like the Attack binding-light compared to comparable skis that width but heavier than any kids ski.
The bindings and skis add up to something that is "heavy" compared to kids gear but are light for adult gear. It will take some getting used to but in the end, this gear will last you longer, be more stable all over the mountain and make you a better skier. Weight is your friend for stability at high speeds, in the air and in rough terrain with light skis/bindings getting bucked around easier. It will become your new normal with some use, so ski more and worry about it less!