In my opinion your
non ceteris paribus question make sense. How it is treated by SE's (it is the
SEO sub forum) is another question.
Some reflections:
- What about other ranking factors?
- Related content on the site and internal links to related content on the site.
I am not a
SEO expert and there may IMO be no unique answer. It may vary from case to case depending on how important the other factors are and the structure of the two sites.