Steve could not bionically make the wheelchair roll fast and stay in a straight line since only the right wheel would be getting extra power; the chair would spin counter-clockwise unless both arms were bionic.
At the start of the "bionic pillow fight", the feathers in Jaime's pillow start falling out BEFORE she hits Steve for the first time.
In the first close-up shot of Jaime's head with the green oxygen mask fitted to it, Jaime's right eyelid visibly twitches a couple times. Jaime is supposedly lifeless, so conceivably even the medics' close working with her face could not cause any involuntary reaction.
Steve says that he saw Jaime awake and talking, yet in the previous shots where he sees Jaime being wheeled out of the hospital on a gurney, she is motionless and silent, with her eyes closed and apparently asleep.
Steve is stated to be unconscious prior to surgery, so he could not have fluttered his eyelids while he was being wheeled into surgery in his hospital bed, nor could he have opened his eyes or used his bionic eye to see the convalescent Jaime in her own hospital bed as he was wheeled past the doorway of her room.