Nothing in this real world can get you to 100 percent simultaneous triggering. We can comfortably get you to 99.999999999999 percent without much difficulty. Or 99.999999999999999999999999999999999999 percent on a Pentagon budget.
Anyone telling you that they can do 100 percent is a liar or a fool (or both).
You have to make a decision for yourself if you can live with 99.9 or 99.99 percent. Of if it even makes a real life difference.