Bauer’s insta claims that the blade core (at the retail level) is the same but I disagree. The ADV’s blade has worse puck feel than the 1XL. So to answer your question I would say that the blade core is different and is of a lighter material since the ADV isn’t as blade heavy as the 1XL (not that the 1XL is blade heavy but comparatively).
I have two Pro ADVs right now but just wondering if they actually hold up or if they’re as fragile as they seem, can’t afford to keep stocking up on these if they just melt in your hands so the back up option will be 82 Flex Pro Stock 1X Lites, heard the Flylite is blade heavy but all Easton elliptical tapers were.