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.
Ted J. Kilvington, Jr.
"I still have that comic, only now it's in liquid form!"