s+
Dominant nearly to the point of being broken. Is dominant in almost all situations even in the hands of average players on any team composition. Generally over-tuned and soon to be nerfed.
s
Significantly above the point of balance. These gods tend to be top picks and bans. Can dictate the pace of games and can fit into any composition.
s-
Above the point of balance by a decent margin. Can be abused in the hands of better plays and fits into most if not all compositions. Tends to be the last pick or ban.
a+
Slightly above the point of balance. Viable in all compositions however not strong enough to be completely dominant.
a
The point of balance. These gods can be worked into most team compositions and do not require utter mastery of the god to be effective.
a-
Slightly below the point of balance. Still viable in most compositions however more skill with the god is required to be effective.
b
Significantly below the point of balance. Can only be worked into specific compositions or requires extensive knowledge of the god to be effective.
c
Highly ineffective in the hands of most players. Can work only in incredibly specific circumstances. In the hands of a master can be effective however still has limited potential.
d
New gods here.