Wow, I really hadn't considered Pine Box in that way before, great replies guys.
Now that you all have explained it, and considering how powerful Paralyze is in 2nd because of having less turns, it actually is incredibly powerful potentially locking up a model for even a single turn and causing them to miss and activation.
Plus, if your boxed model has the same willpower of 6, and you draw a 13, if you decide, it's not getting out bar a Red Joker, which even then is a hell of a price.
Plus as stated, you can always 2AP rebox if you feel like being tricky lol.