Doubtful, since the whole point of the storyline was that the Winter Soldier was the pre-existing character Bucky. If Winter Soldier had been a new character, there would have been no emotional resonance.
Now it is possible that Brubaker could have signed a creator contract similar to what Siegel & Shuster signed for Superboy, which was of course just a different version of Superman. Such a contract could include any number of royalty options for Brubaker. But unless he did sign such a contract, it is doubtful he will get more than a "special thanks" credit, similar to the one Starlin got at the end of the Avengers film.
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Ted J. Kilvington, Jr.
*****
"I still have that comic, only now it's in liquid form!"