It's not a double standard to support tricking a pro-gun figure into appearing in a gun control ad, while also opposing Google leading people seeking an abortion toward organizations that will misinform them about abortion; it's just a standard. People who hold morally wrong positions are entitled to less courtesy and respect than those who hold morally upright positions, and many people believe being a pro-gun politician to be wrong, and seeking an abortion to be acceptable.
I see questions like yours a lot on HN, and I have a hard time imagining what system of belief might lead to someone asking something like that.
One of these is a one-time stunt, the other is thousands of storefronts that hope a women seeking an abortion will reach them first and they can talk them out of it.
I live close to a very liberal city (we call the high school ‘Evergreen State High’) that has 1 abortion clinic and 2 crisis pregnancy centers.