I feel like equality is perhaps one of the more unbalanced support spells in the game - as it is capable of raising stats to very high levels assuming you have a character with a particularly high stat like speed, etc. it essentially makes other stat raising spells obsolete in many ways.
However I should note that I also identified a bug with this spell where all my stats would keep increasing by about 30% per cast (possibly due to perk - hybridization?) - so perhaps I’ve never really seen the “true” spell effect. With a bug fix this will be mitigated somewhat.