It should be said that there is no essential difference between these books. Fichkingolz's calculus course is very comprehensive, even a little trivial. Unlike western textbooks, it does not introduce concepts such as measurement theory, so it is "elementary" in this sense. Other modern western textbooks are similar, except Principles of Mathematical Analysis by Thomas and Rudin, which emphasizes the concepts of topology and measurement. Bourbaki also wrote books on this subject, which have distinctive features, but are not suitable for textbooks.

The quality of comments varies from person to person. If you study engineering, you don't need any of this. Just look at the textbook. If you study mathematics, just read one (except bourbaki's), because there is no essential difference, and mathematical analysis is a very basic course, that is, if you don't know topology and measurement, subsequent courses will also learn the corresponding content.