I'm average strength, but I'm a VERY slow person.
I have a totally different preference.
I don't want to be super strong and muscular, I enjoy it as I am now.
I also don't want to be fast, because I prefer taking my time with things.
If you could add in a third choice, it would be this, and I'm suprised no one has said yet.
I prefer ENDURANCE to both of them. Even if you're not the fastest, nor strongest person, but you're an endurer, you can last through a lot.
~Mooshykris