Martial Arts Skill vs. Size: All else being equal does size always win?

Question

In other words, do all martial arts favor bigger stronger fighters, or are there martial arts that, two fighters being of the same skill, the smaller guy/girl would win?

Also, are there martial arts that favor different body types (tall, short, skinny, fat, big boned, etc.) over others?

Answer 1

To Guest 8389:  You are right and you are wrong.  They have weight categories because it is sport fighting.  You can't kick groins, gouge eyes or any of that good s**t.  In a balls to the walls, all out, no rules, slug fest it's a completely different game.