Despite McMurphys inability to move the panel, why does he believe he still walks away the ¨ẅinner¨"?

During the meeting, Dr. Spivey listens to McMurphy and is open to his suggestions. Although he doesn't approve the suggestions, he is will to take them under consideration. McMurphy wins because he can communicate with Ratched's superiors and manipulate the system. The fact that Dr. Spivey even takes the time to consider and listen to his proposals is a victory.