Several conversations I've had with my friends about Final Fantasy:

Me: If Cait Sith's weapon is a megaphone, which he uses to shout commands to the huge toy mog he rides, why is it the stronger he is, the stronger the stuffed mog's attack is?

Friend: Maybe he yells louder?

We concluded several other things as well:

-The reason Cait Sith's dice attack gets stronger the more times he uses it is because practice makes perfect. Yes, with dice.
-The reason Vincent's attack gets stronger even if he uses the same gun is because the stronger he is, the harder he pulls the trigger.