If a woman gets pregnant in a one night stand, most of the time someone wasn't using birth control (there's obviously exceptions, but it's undeniably most of the time due to irresponsible sex). Your comic explicitly mentions this was the case in the second panel. Apologies if it irritates you, if that's the scenario you are presenting, responsible birth control isn't something you can omit from your argument.
Birth control doesn’t mater in the argument because It has the chance of failing. If birth control could stop pregnancies 100% then your argument would hold more water, but as of right now it holds as much as a slotted spoon.
The comic never mentions anything about the use (Or lack thereof) of birth control, and the panels in the comic are two separate scenarios with different people. You can have the safest sex in the world and shit can still happen.
The point of the comic is when shit does happen, women are given a last resort, a last way out, men are given none.
Do you see why that argument isn’t a very good one? Stop being a contrarian, admit that the double standard is fucked up and move on, acknowledging a men’s issue isn’t going to hurt you.