e-qual-i-ty 1. the state or quality of being equal; correspondence in quantity, degree, value, rank, or ability. 2. uniform character, as of motion or surface.
Legal Dictionary
the quality or state of being equal: as a : sameness or equivalence in number, quantity, or measure b : likeness or sameness in quality, power, status, or degree
Equality does not mean it is the same. It means equal. Neither same-sex marriage nor domestic partnerships have federal rights, therefore, neither are marriage equality. However, if domestic partnerships had federal rights and same-sex marriage did not then domestic partnerships would be marriage equality and same-sex marriage would not. To define same-sex marriage as marriage equality is a lie. Same-sex marriage in Massachusetts, Connecticut, Iowa, Vermont, New Hampshire and California proves that. None of those marriage are legally equal to heterosexual marriage. However, same-sex marriages in those states are equal to domestic partnerships in California and the State of Washington.
Big Lies we tell ourselves
1. Sames-sex marriage is marriage equality
2. Domestic partnerships can never be marriage equality