[So I've had two failed attempts at sending this reply, hopefully this time it will finally work!!! lol]
I am competitive, as you can probably tell from what I just wrote (I couldn't let my computer win!), but like you, I don't always like to win, especially if I'm competing against someone else. I tend to feel bad for them, and then I feel guilty, which makes winning feel like a negative thing.
So I've fought really hard against my competitiveness, especially since I have a twin sister, and I feel bad whenever something goes better for me than for her. I always sort of hope that if something has to go wrong for one of us, that it will go wrong for me, as terrible as that sounds...
Anyway, it's interesting that not all empaths are competitive. And this is only a theory, but I think the main reason is that some of us are "sensation seekers" and some are "non-sensation seekers." A sensation seeker loves to feel the heightened emotions of life (examples could be adrenaline, love, or winning), and a non-sensation seeker likes a more easygoing, low-key kind of life.
I'm a sensation seeker, but like most of you, I'm also a highly sensitive person, which means I tend to have "one foot on the gas and one foot on the brake." In other words, while I love the thrill of winning, being highly sensitive leads me to have mixed emotions about it when others are involved.
And others are usually involved, even when I'm working alone. Like for example, in my high school art classes, people would compliment my work, and they actually said "I hate you!" (joking around)... I could feel their jealousy, but I also felt some true anger from them, all joking aside.
So I've learned that comparing is bound to happen in life, unless I keep all of my work hidden away, which is a sad thought.