California but not federal law

The California sample ballot has this summary for Prop. 19:

LEGALIZES MARIJUANA UNDER CALIFORNIA BUT NOT FEDERAL LAW. PERMITS LOCAL GOVERNMENTS TO REGULATE AND TAX COMMERCIAL PRODUCTION, DISTRIBUTION, AND SALE OF MARIJUANA. INITIATIVE STATUTE.

Compare this to the official 2008 Prop 8 summary:

ELIMINATES RIGHT OF SAME–SEX COUPLES TO MARRY. INITIATIVE CONSTITUTIONAL AMENDMENT.

It would have made more sense to just say, "defines marriage be between a man and a woman" or "restores popular marriage definition". Supposedly there will be an initiative to repeal Prop 8 and endorse same-sex marriage, so it ought to say, "legalizes same-sex marriage under California but not federal law." After all, states that legalize marijuana or same-sex marriage are in conflict with federal law in both cases.