CC-4277 said:
Child fighting child = Strongest wins
Child fighting Adult = Adult will win because of more experience and strength.
Adult Fighting Adult = Stronger of the two wins.
Force user Adult vs Adult = FU adult will win.
Not necessarily. There's too many variables in a fight to reduce the outcome to simply whoever has the more physical strength in a fight of relatively equal opponents. The winner in two children fighting each other can be the one who's more maneuverable, more resilient, more determined not to lose, more ingenious. A child that hits like a wet noodle but runs like a Cheetah can beat another that hits like a truck, relatively speaking, by just maintaining a safe distance and playing footsies with him until he can strike him in either the gut or the crotch safely. Alternatively, replace the fast child with a inventive one and he can lead the stronger one to fight in unfavorable terrain/lead him into a trap to fight him off easier.
A child fighting an adult would end 90% of the time in the child losing, true, but 99% percent of the time the child would be underrated, so if he can play his cards right he can win without relying on physical strength, such as hit and run, sneak attacks, or just plain nicking him and running away afterwards. Adult vs Adult would be the same as Child vs Child, while Force User vs Non-Force user is all a matter of hit and run, or overwhelming firepower, or fighting in very favorable terrain.
Sorry if it's a bad explanation, but basically, strength matters less in a fight than the ability to adapt and execute plans on the spot. Hence the saying, as Maria put it, survival of the fittest being the correct term.
