Kichikuou Rance:Parameters

Commander stats
Commanders have their own stats, their troop stats and their command abilities.

Commander stats (attack, defence and strikes) : used when calculating damage done in battles (and the chance of damage being done to them). Strikes is the maximum amount of attacks (and maximum potential damage) that a commander can do, most commanders have a relatively low number of strikes and will inflict 10 or less damage to enemy troops. They are mainly useful when attacking demons or when using "snipe" skills to damage commanders directly. When attacking commanders, commanders only seem to attack a maximum of 6 times, even if the Kaijuu prince has 100 strikes.

Troop attack/defence : is the main indicator of how much damage a unit will do on the battlefield as most commanders do relatively low damage in battles (and depending on field size, may not even get to fight). Troop attack for magic users has no effect unless you right click and select "Direct" to use direct attacks which is a melee attack that can only be used in the front row. This is generally a bad idea, except possibly for characters like Satella or Elenoa which have much better melee than magic stats.

Note that for some reason, ranged units such as Isoroku do massive damage to commanders despite having mediocre stats. Isoroku can easily clear multiple dragons at Rising Dragon Peak on her own whereas characters like Patton and Kaijuu prince will struggle.

Magic is how much damage the unit and it's commander (if a mage) will do when attacking/defending with magic. Satella for example, does very low damage due to her low magic level, even though she has pretty high commander stats. It also affects how much damage you take from magical attacks, if an enemy unit (such as Helman Knights) has high defence, attacking them with magic is a good way to deal more damage than with physical attacks.

Command abilities are bonuses to the troop attack/defence depending on whether the unit is attacking, defending or in a dungeon. Rick for example, is best used in offensive battles while Cordoba works best when defending.

Strategy chance is the odds of successfully implementing a strategy. Most commanders will only get +10 advantage when doing this, but some tacticians like Cream have a chance of gaining +50 advantage which makes your troops much stronger. Advantage seems to be a % boost to your troop effectiveness.

Levels

Everytime a commander levels, their strikes will increase by +1 and their command abilities may increase as well. This appears to be random, and you may not see a difference even after leveling a commander several times. This also means there is no real need to level most commanders as they won't improve much anyway (unless you are using the popularity staff).

Skills
Most skills fall into two categories, "snipe" skills like rance attacks which target a commander directly, and "bomb" skills that cause damage to the whole unit. Snipe skills do 1-4 damage and bomb skills tend to do about 2x damage but seem quite inconsistent in damage. Bomb skills seem to do extra damage vs very large units (1000 troops and above).