Their boots are brown when they should be green, their weapons and motion-trackers are green when they should be brown, their hand-welders are attached with sculpted web straps rather than lanyards, Hicks should only have one pouch on his belt, both figures' watch-straps should be black (I think, anyway; determining the actual colour of objects seen onscreen can be tricky), Hudson's sweatband should be green and sculpted differently than Hicks's, his knife/sheathe should be black and his helmet should be painted with a camouflage pattern matching his BDUs, not his body armour. Hudson is also missing the leather lanyard/necklace thing he wears and "final battle" version is missing the additional bandages that he had on the fingers of his right hand in that scene (and I've probably forgotten a few more besides, but I'm sure bigbisont can fill you in).
The accessories for the single-packed Hicks and Hudson were also screwed up, as those two figures are clearly and obviously based on the "Game over, man!" scene, but there, Hudson has no lamp-pack whereas Hicks does but no longer has his shotgun/holster.
