I'll get more done because I won't create the bad architectures that they will. I won't write the bugs that they do. I won't head down the dead ends that they do. (Yes, I'll still do a few. They'll do enough more that I'll still finish ahead of them, even with working fewer hours.)
Once you get the job (although, I highly recommend you avoid taking a job if you get a death march software plantation vibe), you manage high demands by nailing management on requirements and milestones and then out-plan and out-deliver your work so you have an answer for "hey, why are you leaving when we're all working overtime?" If you put in overtime at the start, assist other people and show you can deliver, then they can't give you much grief later.