So is there a way to Transfer your sens, calculated with this Method, to another Game?
Do all Games behave the same with your calculated sens?
And any Tips how to get this done in Fortnite BR since Storm or other players kill you during the aiming/calculating process?
yes you can transfer your sensitivity to other games
the best method to do is is to take a ruler and measure your distance on the mousepad that you need to make a 360° turn in the game
eg in CoD your ratio is 40cm per 360°, then launch Fortnite and adjust your xim sensitivity so you do a 360° turn with 40cm too
as for your Fortnite questions, the developers will soon add a playground option in which you could find your sensitivity
alternatively once the bus is flying over the map drop out at the earliest movement and fly as far to the left or right that you can
land near the coast, farm a bit of wood and build a small shelter around you
now you can start doing the tutorial for around 5-10 minutes or more depending on how much luck you have with the circle
also using the 20v20 mode is really good for that too as you are basically completely save in your starting area thanks to having 19 other teammates around you