Hello readers! Here is an overview of Johnny and Aerith's Power Levels after one years have passed (14-15 Years Old), although these numbers will not appear explicitly in the story (no System UI).
1. JOHNNY'S STATUS (Age: 15)
Kill Count: ± 4,000 Monsters (Estimated average of 10 monsters/day over 2 years).
Estimated Level: Level 30-40.
Power Scale: His strength is now equivalent to a SOLDIER 1st Class (on par with Zack Fair at the beginning of the game).
Wealth: Very Wealthy (Gil from hunts and Turks Mission stashed in various secret locations).
Equipment & Build:
Weapon: Dragon Slayer.
Note: It has been reforged by Izo over the course of a year, becoming denser and heavier to repair cracks.
Materia Slots (Weapon): Cover (Master), Healing (Master), Summon (Chocobo & Moogle), HP Up (Master), Vitality (Master), Spirit (Master).
Armor (Bangle):
Materia Slots: MP Up (Master), Steadfast Block (Master).
Stat Analysis: Johnny is the definition of a "Physical Tank." While a normal Level 40 character possesses standard MP, Johnny (due to his soul basis being Guts, who is non-magical) has a very low base MP (e.g., 20 MP). Even with an MP Up Materia, his MP only increases slightly to around 25 MP. However, in exchange, his Vitality and Spirit are maxed out. Bullets, claws, and standard magic have almost no effect on him.
2. AERITH'S STATUS
Estimated Level: Level 10-15.
Weapon: Guard Stick.
Materia:
Healing (Master)
Fire (Level 2)
Ice, Wind, Lightning (Level 1)
HP Up & MP Up (Level 1)