Yes, one is often being a 'left brainier and the other being pedantic or OCD. I think it's better to suggest someone is (say) a 'left brainer' (as a means of understanding how or why they might do something) for acting like one than just calling them names for being 'different' to you.
I would say that was some level of OCD? I would think 'most people' would keep them in pairs and that's about it. ;-)
Cheers, T i m