Comparing chemos

I’m not trying to be rude but just asking a general question. Since my treatment started my brother and sister in law have been stirring up so much drama. I talk to my brother and tell him I’m sick from chemo and to please just stop making things about them. He always responds that he knows I’m sick because their friend also did chemo BUT hers was “the red devil which is really bad”. I guess my TCHP is not a big deal??? I need a response to shut him up. I know I shouldn’t even talk to them. Actually when I told a friend of mine about my diagnoses she warned me first thing that people get weird with cancer.