>>9230329The NBK is a lot less dense for sure. It's really smartly simplified past Scrapper though. They kept most of the color separation, reduced parts without sacrificing articulation by removing skirt armor, used Longhaul's weapon to lock the entire hip assembly, etc. The combined mode is able to hold together fine albeit wobbly due to the lack of ratcheted joints.
The quality varies a lot depending on the manufacturer and batch though. Mine was from the NBK boxset version and the worker twisted the parts off the runner.