We challenge you in front of everyone: either you become a Muslim if you don’t win, or my friends and I become Christians if you win
Being muslim, I doubt your definition of “winning” and my definition are very much the same.
Christians are called to transform into the selfless love of Jesus. God is described as light and in him is not darkness at all. Light gives illumination, warmth, and life sustaining energy. Darkness might be seen as the opposite of “giving” light. The consumptive taking (darkness) of Satan can be seen in Isaiah 14.
“Wining” might be considered conquest (taking"). Most people are not going to be interested in Christianity because most people are more interested in taking than giving.
If you are interested in what you can get, Christianity can only offer;
Eternal life
Access to wisdom
Knowledge of truth
Better character
A good ol fashioned relig-off 
Here’s the challenge! Find any group of Christians anywhere in the world currently exterminating others for their beliefs , go ahead I’ll wait