Let's use the good pic that Pat posted:
Square 1: Huge advantage to FO front, plain rear.
Square 2, indoors : Advantage to green FO front, plain rear.
Square 3: Massive insane advantage to red FO front, plain rear.
Square 4: Maybe tie, maybe advantage to the night sights.
If you can still see the outline of the iron sights, then FO front, plain rear may have an advantage due to wider gaps in the sight window, and or thinner front sight.
If you have normal night sights, they often won't glow in dusk conditions. But some massive front night sites will glow brightly, and have an advantage.
It's a toss up based on specific conditions. And since I'm most likely point shooting anyways........I lean towards day time sights usually.
Square 5: You're screwed. Can't see the target.
So I'm giving the advantage to FO front, plain rear. Because why ruin my daytime sight picture, for a tactically useless glowing sight with no visible target.
Square 6: Advantage to FO front, plain rear. With your flashlight on, a thin front sight will allow more light in the gap of the sights. Better speed. More contrast.
Unless your light is too bright. Too bright and the front sight gets washed out as you blind yourself. A thicker sight blocks more light, and simply is less likely to get wash out.
Surefire makes auto adjusting, dimming, combat lights to mitigate this problem.
I generally avoid TFO sights. While they do what they say, you can clearly see that the rear sight is often brighter, and 3 dot sights are a bit distracting. They simply don't work well for me when I push my limits.