I think this depends, since your question isn't quite clear.
If by "uploading" you mean new torrents, bigger files (both in size and video quality) are likely to be the better ones.
However, if you're just seeding stuff you downloaded it might depend on the videos, and there probably isn't a direct connection between size and people who might download it.
How can a man be called "straight" when he falls in love with a man…..paradoxxxxxxxxxxxxxx ???
Not quite. Being that sexual orientation is a spectrum, usually you use "straight", "gay" or "bi" regarding what you like most, it doesn't mean you don't like the other at all.
That, and then there are platonic relationships. My relation with my best friend, who is straight, is a lot like a relationship sans the sex. It works for us, too.