For the question, I kind of still don't get it. I figured out that climb limit weight depends only on engine performance. But any specific reason as to why?
Practically climb will be affected by other factors too, wouldn't it?
As far as I go, I had never seen that there was an option for personal information too

I updated it now

I'm pretty new and learning stuff. I intend to know about the 737 as much as I can