This is a good insight. Pair programming is a tool that is very useful in some contexts but not in others.
There are so many things that can vary from project to project: How big is the system? What level of expertise does each developer have with the domain, or with the tools being used to build it? What are the personalities of all the people involved? Is the system a cutting edge research project or a well understood thing that just doesn't happen to exist yet?
All of these variables, and lots more, would influence my decisions about who I'd want to work with, and (if there is someone other than me) how we'd work together.
Given all that I consider it extremely unlikely that there are any useful and universal conclusions to be drawn.
There are so many things that can vary from project to project: How big is the system? What level of expertise does each developer have with the domain, or with the tools being used to build it? What are the personalities of all the people involved? Is the system a cutting edge research project or a well understood thing that just doesn't happen to exist yet?
All of these variables, and lots more, would influence my decisions about who I'd want to work with, and (if there is someone other than me) how we'd work together.
Given all that I consider it extremely unlikely that there are any useful and universal conclusions to be drawn.