The three from Predators have the same body and their latest, Shadow and Classic use the same body.
What about the new Samurai Pred?
More likely they will go by the mountains of cash they made off other Marvel licenses than compare it to a completely unrelated and (merchandise wise) unproven property.
There is no precedent for the Iron Man gantry but I don't think they're sweating it.
Same goes for Iron Monger. Actually, same goes for every Iron Man figure really. Each one required a brand new build and was a one time use sort of thing (obviously II/III and IV/VI are minor exceptions).
Hot Toys has proven over and over that they dont mind making figure that cant be reused...
I would venture to say that Sully will have zero impact on Hulk. The box office will as will sales for previous Marvel figures...