Attack Potency

Destructive Capacity
Destructive Capacity is the term used to determine the amount of damage a character can produce. It is measured in units of energy.

Attack Potency
An alternative term for Destructive Capacity which has more direct meaning: The Destructive Capacity that an attack is equivalent to. A character with a certain degree of attack potency does not necessarily need to cause destructive feats on that level, but can cause damage to characters that can withstand such forces.

We are aware that this technically violates the principle of conservation of energy, as it should logically disperse upon impact, but fiction generally tends to ignore this fact, so we overlook it as well.

Also, kindly remember that Attack Potency is the measure of Destructive Capacity of an attack, and as such, is measured via its energy damage equivalent. Hence, characters that destroy mountains or islands are not automatically mountain or island level, especially if they are small. The attack potency depends on the energy output of a single attack, not the area of effect of the attack.

Standard sizes
The values for High 5-A and above are obtained from here. The calculation assumes that the blast is omni-directional (spherical), as is generally the case in most fictional occurrences, and that the energy output is sufficient to destroy the entirety of the cosmic structure.
 * Moon level: Earth's satellite Moon.
 * Small Planet level: Mercury.
 * Planet level: The Earth.
 * Dwarf Star level: Brown Dwarf star (specifically, the OTS 44).
 * Small Star level: VB 10.
 * Star level: The Sun.
 * Large Star level: Rigel
 * Solar System level: The star system known as the Solar System.
 * Multi-Solar System level: Instead of doubling the value of Solar System level, the distance between two such systems needs to be accounted for as well. The calculation for energy required to destroy two solar systems was done, with the following assumptions:
 * Distance between them as the minimum distance between Sun and the next closest star, the Alpha Centauri.
 * A spherical blast, strong enough to obliterate the contents of both solar systems at the same time.
 * Hence, the value obtained is the energy required to destroy two solar systems at a realistic distance.
 * Galaxy level: The Milky Way galaxy.
 * Multi-Galaxy level: Instead of doubling the value of Galaxy level, the distance between two galaxies needs to be accounted for as well. The calculation for energy required to destroy two galaxies was done with the assumptions:
 * Distance between them as the minimum distance between Milky Way Galaxy and the next closest similar-sized galaxy, the Andromeda galaxy.
 * Universe level: Given that the universe's actual size is unknown, we do not know the amount of energy that would be required to destroy all matter within it. As such, the bare minimum value for the observable universe was calculated as a lower border instead (The PSRJ0348+0432 was used as a base). Any greater finite number is also included within this tier, whereas countably infinite numbers are included under High Universe level.

"+" symbol
The "+" symbol should be used when the Attack Potency has been calculated to be greater than the average (arithmetic mean) of the high end energy level and low end energy level of a particular tier.

The "+" symbol can also be used if there exists a calculation extremely close to the arithmetic mean, and characters scale above the calculated feat by a wide margin, for example being able to defeat enemies on such levels with a single casual attack.

Example: Average of Large Building level is: [2 Tons (low end) + 11 tons (high end)]/2 = 6.5 Tons (the arithmetic mean). All energy levels from 2 Tons to 6.5 Tons should be listed as Large Building level, whereas all energy levels from 6.5 Tons to 11 Tons should be listed as Large Building level+.

At least
Should be used to denote the lower cap of a character, if the exact value is indeterminate.

At most
Should be used to denote the higher cap of a character, if the exact value is indeterminate.

Likely
Should be used to list a hypothetical statistic for a character, but inconclusive due to lack of feats or viable power-scaling. Probability of said hypothetical statistic should be favourable.

Possibly
Should be used to list a hypothetical statistic for a character, but inconclusive due to lack of feats or viable power-scaling. Probability of said hypothetical statistic should also be indeterminate.

Higher
This should be used to denote a character's weapons, techniques, or attributes that are much stronger than their base level, but still within the same tier. For example, a character that is Solar System level but has an attack that multiplies their power by 100 times. In this instance it should be written as “Solar System level, higher with that ability or technique”.

Furthermore, higher may also be used to denote a case where the character is possibly or likely a higher tier, but to what degree is not specified. This is specifically referring to cases such as “At least 4-B, likely higher” or “At least Solar System level, likely higher”.

Trivia

 * To know the equivalent prefix for a particular exponential value, please see this page.
 * A useful long reference list for the tiers of many types of common feats.
 * A Foe is a unit used to measure the energy released by a supernova, and is equivalent to 1044 Joules.
 * The reasons for our Large Planet level to Universe level borders.

Other statistics

 * Speed
 * Lifting Strength
 * Striking Strength
 * Durability
 * Range
 * Intelligence