Ross neglected to provide anyone in the Avengers with that info.
Ross has Bruce exactly where he wants him and can finally get revenge on him for everything that happened in Incredible Hulk without anyone ever knowing.
That could be experimentation to not allow him to Hulk out, or could be forcing the Hulk out for whatever reason. Just give me Ross torturing, brainwashing, manipulating or otherwise fucking with (including literally fucking with if that's your thing) Bruce in the Raft.
Bruce Is Secretly Already Being Held in The Raft - Captivity, Torture, Experimentation, etc.
Ross has Bruce exactly where he wants him and can finally get revenge on him for everything that happened in Incredible Hulk without anyone ever knowing.
That could be experimentation to not allow him to Hulk out, or could be forcing the Hulk out for whatever reason. Just give me Ross torturing, brainwashing, manipulating or otherwise fucking with (including literally fucking with if that's your thing) Bruce in the Raft.