The focus on marriage is problematic in a number of ways, honestly. First of all, yes, unions for all (legally) and marriages for whoever your church wants to have 'em (religiously) WOULD qualify as "equality". It would also be such a major, major change (people are hung up on that word not just cause they don't want us to have it, but because they WANT their relationships to be special and superior) that I think it's regrettably unrealistic.
Aside from all that, there's a growing and dangerous mentality that once there's same sex marriage, everything is magically ok for queer people. Bam! We're equal! And this is incredibly untrue: there's the military issue to deal with, there's hate crimes, there's workplace and housing discrimination, not even getting into the criminal justice system and it's multitude of inadequacies (50% of transgender people will end up in jail for some amount of time: Something's wrong here). It's interesting to note that marriage only applies to a percentage of queer people (whereas we all need job and housing protection, we're all potential targets for hate crimes or the justice system itself), but it's the ones that have enough money that they don't need to worry about their job or housing (right now) that are directing the rights orgs.