Why Didn't the Defense Mount a Real Defense During the Prop. 8 Trial?

I assume everybody has heard the news, but I might as well reiterate it: Chief U.S. District Judge Vaughn Walker declared Proposition 8, California's voter-approved same-sex-marriage ban, to be unconstitutional. This is, of course, good news, but there are still a number of questions to be answered, including one in particular that is bugging me.
Read more »