LIMITED USE LICENSE:
Activision grants you the non-exclusive, non-transferable, limited right and license to use the Program Utilities solely for your own personal, non-commercial use in order to create the New Game Materials. All rights not specifically granted under this Agreement are reserved by Activision and, as applicable, Activision’s licensors. The Program Utilities are licensed, not sold. This license confers no title or ownership in the Program Utilities and should not be construed as a sale of any rights in the Program Utilities.
All title, ownership rights and intellectual property rights in and to the Program Utilities and any and all copies thereof are owned by Activision or its licensors. The Program Utilities are protected by the copyright laws of the United States, international copyright treaties and conventions and other laws. The Program Utilities may contain certain licensed materials and, in that event, Activision’s licensors may protect their rights in the event of any violation of this Agreement. You agree not to remove, disable or circumvent any proprietary notices or labels contained on or within the Program Utilities. All New Game Materials created by you shall be exclusively owned by Activision and/or its licensors as a derivative work (as such term is described under U.S. copyright law) of the Program Utilities and Call of Duty and Activision and its licensors may use any New Game Materials made publicly available by you for any purpose whatsoever, including but not limited to, for purpose of advertising and promoting Call of Duty.
Basically, your work is already owned by Activision and they can do whatever they want with it. You can ask the public for donation, for example "I need a new pc to construct map quicker, please donate me!".