Working twice the hours does not mean you are putting in twice the effort or getting twice the results. You're more likely to be a complete liability, because you're tired, unfocussed and not capable of thinking straight. Doing this for a week or more is a recipe for disaster. As for this leading to "more decision power" than people who chose not to indulge in such antics, I've yet to see this in any role I've been in in the last 20+ years. Most places would not see such behaviour as a positive, either for you or your place in the team and organisation.
The human body is not a machine. We can't work long hours without significant mental and physical impairment. I've worked 12 hour day and night shifts, and seen the effects on me and the others around me. Extreme tiredness and disrupted body clocks lead to careless, stupid and costly mistakes. We were never meant to work such gruelling hours. I've worked 36 hours straight in a research laboratory. I was destroyed for several days following, wiping out any benefit of the effort I'd put in. And I made a silly mistake 32 hours in, ruining the whole experiment, due to one moment of inattention after 12 hours straight intense focus. Individual "superhuman effort" does not beat effective planning and efficient use of time and teamworking. Which is why so few companies want to rely on primadonnas, and instead want reliable and predictable people who won't flake out.
Today, I work regular office hours. Work hard while I'm there, and start and leave bang on time each day. I'm much better for it in all respects. And if you don't want to get severe RSI and burnout, I'd suggest at least considering these points. I didn't until I was severely affected by both, and it was not at all fun.
