The Winter Soldier and Doomsday

Just in case his plan fails (although this makes no sense, as I see it), Lex’s contrived machinations also include creating the ultimate weapon, using his blood, Zod’s corpse, and Kryptonian technology. Thus, if Batman fails to kill Superman, Doomsday is supposed to finish the job.
The similarity between the movies is that Civil War also has a superpowered villain. But, instead of being the ultimate baddie and the means of delivering the finishing blow, the Winter Soldier is used just the put the plan into motion. Whereas Doomsday was certain to defeat Superman (and not the Trinity), the Winter Soldier was supposed to bring Iron Man and Captain America into such a severe state of disagreement that the Avengers will find themselves on different sides of a barricade.

Did Zack Snyder make the best of Doomsday, or did the Russos use Bucky in a more compelling way? This isn’t the point of this list, at this moment. What do you think?
On the next page, the underused villain!
