Ragna-rock doesn't affect the EXP gained for levelling weapons. It was probably not implemented properly or was a mistranslation. Equipping 2 Ragna-rocks imparts +400% EXP (x5). This is multiplied with the Chain Count multiplier (+50% from 220-369 and +100% from 370 onward). The BR difference has a much stronger influence on the EXP gained, much like it does on influencing stat gains. Chain does affect equipment growth. The EXP required for strengthening weapons is absurdly high. The bonuses have also been lowered for the PC version, probably to compensate for the balancing act they pulled. Not that big of a deal.
Shields gain 60% of the EXP for the Turn. More if the unit blocks with the Shield (+40% for first block, then unknown after...).
EXP gained for stats is based on what goes on in battle. EXP split is uneven; is tilted towards the selection phase. Logged here. Still nothing based on Chain, but assuming that it has the same gradual effect as with equipment. There are 3 types of growths: Balance, Combat, Mystic. Those are set on the unit and cannot be changed. However, since stat gains can be skewed, this can be ignored on the PC.
During battle...
Once a MA is ready to be selected for levelling up, the MA stops gaining EXP. The Skill, however, continues to gain EXP and can be easily seen when continually using any of the arts in the Skill group. Reaching a new level in the Skill will show with the Mystic Chance splash. It also seems like the game will always choose the highest Rank MA to learn, even if another art is ready to level up.
CAs and IAs may act in a similar manner. Sparking the new level will temporarily stop any EXP gain at the total for that level (Lv.2 = 32EXP, Lv.3 = 106EXP, etc.), then will start gaining EXP again as selection and execution beings again.
Selection = 2EXP. Execution (doesn't matter if it's a miss) = 2EXP. Sparking = 2EXP to WS, 0EXP to WT. If using "Play it by ear!" or reassessing to an art, EXP goes only to execution. More here.
Union Morale
Lockup = 0 (engage directly) or 40 (engage after target has acted)
Side Attack = 80
Rear Assault = 120
Massive Strike = 150
Intercept = 80
Raidlock = 130
Use EA = -1000
Attacking = amount varies, but usually hovers around 50?
Army Morale
Lockup = 0
Side Attack = 100
Rear Assault = 140
Massive Strike = 180
Intercept = 100
Raidlock = 240
Use EA = +100
Terminate union = 160
Reinforce = 120
Critical = 5~30? (varies based on current army morale, it seems)
Track Change
0~300 - play low morale track
301~700 - play normal encounter track
701~1000 - play high morale track
*** approximate
Starting Morale
Army
Disadvantage - -300 from start
Low Morale (greater than 10BR in enemy's favour) - 100
Neutral (+/- 9 BR of encounter) - 500
High Morale (greater than 10BR in player's favour) - 900
Union
Add up the individual unit morale. Max starting is 255
Bonus Stats
Already added to the wiki, but the highest you can get for a stat bonus is based on either the unit's current or BR99 stats, whichever is lower. There is no point in waiting for the PC version as stat gains are purely percentage based. After getting the bonuses, the unit's stats will always be that percentage higher than if they didn't get the bonus.
Weapon/Shield descriptions
Katana: Higher MYS, but suffers from lower EVA. Good for balanced units.
Sword: Balanced stats, making it good for all purpose units. Decent EVA and CO/CD rates.
Katana: High ATK and MYS, but suffers from low DEF/M.DEF and EVA rates. Generally have high CO/CD rates, are light, making them good for units focused on offense.
Axe: High in both ATK and DEF, but suffers from lower CO/CD chances.
Mace: High overall stats, but low EVA and CO/CD chances.
Spear: High stats all around, but are heavy. Suffers from low M.DEF on the X360.
Staff: High MYS for heavy MA users. Also has decent ATK values for staff-specific arts.
Shield: Helps block MAs. Varying weights depending on the size of the shield.
Evasion ratings from JP guide
D - 0-5
C - 6-11
B - 12-17
A - 18-23
S - 24-29
SS - 30+
Enemy Arts
Deathtouch - is a CA, deals mystic damage (Block is in blue)
Bone - is a MA, deals physical damage (Block is in white, Rockgraters would not cast it when silenced)
Emmy's alt dialogue
(Balterossa)
Warrior Woman: "Old lady"!? Excuse you! Who the hell do you think you are?
Rush: Huh? ...I guess I mistook you for someone else. Totally look the same, though...
Warrior Woman: You're awfully rude to people you've just met.
Rush: S-sorry!
Warrior Woman: Hmph... I'll let it slide this time. Of course, that's on the condition that there's never a second.
Warrior Woman: Calling someone "old lady" is quite inconsiderate... especially when they aren't old!
If in Elysion...
Warrior Woman: Calling someone "old lady" is rude and inconsiderate. Besides, I am far from old!