Look the scanned image is precisly what Jamaat Ahamdiyya believes in declaring others Kaafir. So whats the problem? Do you have any issues with the writing? What kind of clarification you require from this statement of Khalifa tul Masih? Is there any particular “ALLEGATION” you would like to post which we can answer?
The writing is an open book and I dont think can be/need to clarified any further.
There is indeed difference in Muslim and Kafir. If you need more information on that I suggest visit some of your Sunni Scholars as this thread cannot cater for such a wide range of issues.